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Technical help on the following diagnostic trouble codes (DTC's);

OBDII GENERIC DIAGNOSTIC TROUBLE CODES (DTC's)

• ALLISON HD Code (DTC) P0068 MAP/MAF Throttle Position Correlation


• ALLISON HD Code (DTC) P0069 Manifold Absolute Pressure Barometric Pressure Correlation


• ALLISON HD Code (DTC) P0095 Intake Air Temperature Sensor 2 Circuit


• ALLISON HD Code (DTC) P0096 Intake Air Temperature Sensor 2 Circuit Range/Performance


• ALLISON HD Code (DTC) P0097 Intake Air Temperature Sensor 2 Circuit Low


• ALLISON HD Code (DTC) P0098 Intake Air Temperature Sensor 2 Circuit High


• ALLISON HD Code (DTC) P0099 Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic


• ALLISON HD Code (DTC) P0100 Mass or Volume Air flow Circuit Malfunction


• ALLISON HD Code (DTC) P0101 Mass or Volume Air flow Circuit Range/Performance Problem


• ALLISON HD Code (DTC) P0102 Mass or Volume Air Flow Circuit low Input


• ALLISON HD Code (DTC) P0103 Mass or Volume Air flow Circuit High Input


• ALLISON HD Code (DTC) P0104 Mass or Volume Air flow Circuit Intermittent


• ALLISON HD Code (DTC) P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction


• ALLISON HD Code (DTC) P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem


• ALLISON HD Code (DTC) P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input


• ALLISON HD Code (DTC) P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input


• ALLISON HD Code (DTC) P0109 Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent


• ALLISON HD Code (DTC) P0110 Intake Air Temperature Circuit Malfunction


• ALLISON HD Code (DTC) P0111 Intake Air Temperature Circuit Range/Performance Problem


• ALLISON HD Code (DTC) P0112 Intake Air Temperature Circuit Low Input


• ALLISON HD Code (DTC) P0113 Intake Air Temperature Circuit High Input


• ALLISON HD Code (DTC) P0114 Intake Air Temperature Circuit Intermittent


• ALLISON HD Code (DTC) P0115 Engine Coolant Temperature Circuit Malfunction


• ALLISON HD Code (DTC) P0116 Engine Coolant Temperature Circuit Range/Performance Problem


• ALLISON HD Code (DTC) P0117 Engine Coolant Temperature Circuit Low Input


• ALLISON HD Code (DTC) P0118 Engine Coolant Temperature Circuit High Input


• ALLISON HD Code (DTC) P0119 Engine Coolant Temperature Circuit Intermittent


• ALLISON HD Code (DTC) P0120 Throttle Pedal Position Sensor/Switch A Circuit Malfunction


• ALLISON HD Code (DTC) P0121 Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem


• ALLISON HD Code (DTC) P0122 Throttle/Pedal Position Sensor/Switch A Circuit Low Input


• ALLISON HD Code (DTC) P0123 Throttle/Pedal Position Sensor/Switch A Circuit High Input


• ALLISON HD Code (DTC) P0124 Throttle/Pedal Position Sensor/Switch A Circuit Intermittent


• ALLISON HD Code (DTC) P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control


• ALLISON HD Code (DTC) P0126 Insufficient Coolant Temperature for Stable Operation


• ALLISON HD Code (DTC) P0170 Fuel Trim Malfunction (Bank 1)


• ALLISON HD Code (DTC) P0171 System Too Lean (Bank 1)


• ALLISON HD Code (DTC) P0172 System Too Rich (Bank 1)


• ALLISON HD Code (DTC) P0173 Fuel Trim Malfunction (Bank 2)


• ALLISON HD Code (DTC) P0174 System Too Lean (Bank 2)


• ALLISON HD Code (DTC) P0175 System Too Rich (Bank 2)


• ALLISON HD Code (DTC) P0217 Engine Overtemp Condition


• ALLISON HD Code (DTC) P0218 Transmission Over Temperature Condition


• ALLISON HD Code (DTC) P0219 Engine Over Speed Condition


• ALLISON HD Code (DTC) P0220 Throttle/Pedal Position Sensor/Switch B Circuit Malfunction


• ALLISON HD Code (DTC) P0221 Throttle/pedal Position Sensor/Switch B Circuit Range/Performance Problem


• ALLISON HD Code (DTC) P0222 Throttle/pedal Position Sensor/Switch B Circuit Low Input


• ALLISON HD Code (DTC) P0223 Throttle/Pedal Position Sensor/Switch B Circuit High Input


• ALLISON HD Code (DTC) P0224 Throttle/Pedal Position Sensor/Switch B Circuit Intermittent


• ALLISON HD Code (DTC) P0225 Throttle/Pedal Position Sensor/Switch C Circuit Malfunction


• ALLISON HD Code (DTC) P0226 Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem


• ALLISON HD Code (DTC) P0227 Throttle/Pedal Position Sensor/Switch C Circuit Low Input


• ALLISON HD Code (DTC) P0228 Throttle/Pedal Position Sensor/Switch C Circuit High Input


• ALLISON HD Code (DTC) P0229 Throttle/Pedal Position Sensor/Switch C Circuit Intermittent


• ALLISON HD Code (DTC) P0300 Random/Multiple Cylinder Misfire Detected


• ALLISON HD Code (DTC) P0301 Cylinder 1 Misfire Detected


• ALLISON HD Code (DTC) P0302 Cylinder 2 Misfire Detected


• ALLISON HD Code (DTC) P0303 Cylinder 3 Misfire Detected


• ALLISON HD Code (DTC) P0304 Cylinder 4 Misfire Detected


• ALLISON HD Code (DTC) P0305 Cylinder 5 Misfire Detected


• ALLISON HD Code (DTC) P0306 Cylinder 6 Misfire Detected


• ALLISON HD Code (DTC) P0307 Cylinder 7 Misfire Detected


• ALLISON HD Code (DTC) P0308 Cylinder 8 Misfire Detected


• ALLISON HD Code (DTC) P0309 Cylinder 9 Misfire Detected


• ALLISON HD Code (DTC) P0310 Cylinder 10 Misfire Detected


• ALLISON HD Code (DTC) P0311 Cylinder 11 Misfire Detected


• ALLISON HD Code (DTC) P0312 Cylinder 12 Misfire Detected


• ALLISON HD Code (DTC) P0325 Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)


• ALLISON HD Code (DTC) P0326 Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)


• ALLISON HD Code (DTC) P0327 Knock Sensor 1 Circuit low Input (Bank 1 or Single Sensor)


• ALLISON HD Code (DTC) P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)


• ALLISON HD Code (DTC) P0329 Knock Sensor 1 Circuit Input Intermittent (Bank 1 or Single Sensor)


• ALLISON HD Code (DTC) P0330 Knock Sensor 2 Circuit Malfunction (Bank 2)


• ALLISON HD Code (DTC) P0331 Knock Sensor 2 Circuit Range/Performance (Bank )


• ALLISON HD Code (DTC) P0332 Knock Sensor 2 Circuit Low Input (Bank 2)


• ALLISON HD Code (DTC) P0333 Knock Sensor 2 Circuit High Input (Bank 2)


• ALLISON HD Code (DTC) P0334 Knock Sensor 2 Circuit Input Intermittent (Bank 2)


• ALLISON HD Code (DTC) P0335 Crankshaft Position Sensor A Circuit Malfunction


• ALLISON HD Code (DTC) P0336 Crankshaft Position Sensor A Circuit Range/Performance


• ALLISON HD Code (DTC) P0337 Crankshaft Position Sensor A Circuit Low Input


• ALLISON HD Code (DTC) P0338 Crankshaft Position Sensor A Circuit High Input


• ALLISON HD Code (DTC) P0339 Crankshaft Position Sensor A Circuit Intermittent


• ALLISON HD Code (DTC) P0340 Camshaft Position Sensor Circuit Malfunction


• ALLISON HD Code (DTC) P0341 Camshaft Position Sensor Circuit Range/Performance


• ALLISON HD Code (DTC) P0342 Camshaft Position Sensor Circuit Low Input


• ALLISON HD Code (DTC) P0343 Camshaft Position Sensor Circuit High Input


• ALLISON HD Code (DTC) P0344 Camshaft Position Sensor Circuit Intermittent


• ALLISON HD Code (DTC) P0385 Crankshaft Position Sensor B Circuit Malfunction


• ALLISON HD Code (DTC) P0386 Crankshaft Position Sensor B Circuit Range/Performance


• ALLISON HD Code (DTC) P0387 Crankshaft Position Sensor B Circuit Low Input


• ALLISON HD Code (DTC) P0388 Crankshaft Position Sensor B Circuit High Input


• ALLISON HD Code (DTC) P0389 Crankshaft Position Sensor B Circuit Intermittent


• ALLISON HD Code (DTC) P0500 Vehicle Speed Sensor Malfunction


• ALLISON HD Code (DTC) P0501 Vehicle Speed Sensor Range/Performance


• ALLISON HD Code (DTC) P0502 Vehicle Speed Sensor Circuit Low Input


• ALLISON HD Code (DTC) P0503 Vehicle Speed Sensor Intermittent/Erratic/High


• ALLISON HD Code (DTC) P0560 System Voltage Malfunction


• ALLISON HD Code (DTC) P0561 System Voltage Unstable


• ALLISON HD Code (DTC) P0562 System Voltage Low


• ALLISON HD Code (DTC) P0563 System Voltage High


• ALLISON HD Code (DTC) P0600 Serial Communication Link Malfunction


• ALLISON HD Code (DTC) P0601 Internal Control Module Memory Check Sum Error


• ALLISON HD Code (DTC) P0602 Control Module Programming Error


• ALLISON HD Code (DTC) P0603 Internal Control Module Keep Alive Memory (KAM) Error


• ALLISON HD Code (DTC) P0604 Internal Control Module RAM Error


• ALLISON HD Code (DTC) P0605 Internal Control Module ROM Error (Module Identification Defined by SAE J1979)


• ALLISON HD Code (DTC) P0606 PCM Processor Fault


• ALLISON HD Code (DTC) P0608 Control Module VSS Output 'A' Malfunction


• ALLISON HD Code (DTC) P0609 Control Module VSS Output 'B' Malfunction


• ALLISON HD Code (DTC) P0620 Generator Control Circuit Malfunction


• ALLISON HD Code (DTC) P0621 Generator Lamp 'L' Control Circuit Malfunction


• ALLISON HD Code (DTC) P0622 Generator Field 'F' Control Circuit Malfunction


• ALLISON HD Code (DTC) P0650 Malfunction Indicator Lamp (MIL) Control Circuit Malfunction


• ALLISON HD Code (DTC) P0654 Engine RPM Output Circuit Malfunction


• ALLISON HD Code (DTC) P0655 Engine Hot Lamp Output Control Circuit Malfunction


• ALLISON HD Code (DTC) P0656 Fuel Level Output Circuit Malfunction


• ALLISON HD Code (DTC) P0700 Transmission Control System Malfunction


• ALLISON HD Code (DTC) P0701 Transmission Control System Range/Performance


• ALLISON HD Code (DTC) P0702 Transmission Control System Electrical


• ALLISON HD Code (DTC) P0703 Torque Converter/Brake Switch B Circuit Malfunction


• ALLISON HD Code (DTC) P0704 Clutch Switch Input Circuit Malfunction


• ALLISON HD Code (DTC) P0705 Transmission Range Sensor Circuit malfunction (PRNDL Input)


• ALLISON HD Code (DTC) P0706 Transmission Range Sensor Circuit Range/Performance


• ALLISON HD Code (DTC) P0707 Transmission Range Sensor Circuit Low Input


• ALLISON HD Code (DTC) P0708 Transmission Range Sensor Circuit High Input


• ALLISON HD Code (DTC) P0709 Transmission Range Sensor Circuit Intermittent


• ALLISON HD Code (DTC) P0710 Transmission Fluid Temperature Sensor Circuit Malfunction


• ALLISON HD Code (DTC) P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance


• ALLISON HD Code (DTC) P0712 Transmission Fluid Temperature Sensor Circuit Low Input


• ALLISON HD Code (DTC) P0713 Transmission Fluid Temperature Sensor Circuit High Input


• ALLISON HD Code (DTC) P0714 Transmission Fluid Temperature Sensor Circuit Intermittent


• ALLISON HD Code (DTC) P0715 Input/Turbine Speed Sensor Circuit Malfunction


• ALLISON HD Code (DTC) P0716 Input/Turbine Speed Sensor Circuit Range/Performance


• ALLISON HD Code (DTC) P0717 Input/Turbine Speed Sensor Circuit No Signal


• ALLISON HD Code (DTC) P0718 Input/Turbine Speed Sensor Circuit Intermittent


• ALLISON HD Code (DTC) P0719 Torque Converter/Brake Switch B Circuit Low


• ALLISON HD Code (DTC) P0720 Output Speed Sensor Circuit Malfunction


• ALLISON HD Code (DTC) P0721 Output Speed Sensor Range/Performance


• ALLISON HD Code (DTC) P0722 Output Speed Sensor No Signal


• ALLISON HD Code (DTC) P0723 Output Speed Sensor Intermittent


• ALLISON HD Code (DTC) P0724 Torque Converter/Brake Switch B Circuit High


• ALLISON HD Code (DTC) P0725 Engine Speed input Circuit Malfunction


• ALLISON HD Code (DTC) P0726 Engine Speed Input Circuit Range/Performance


• ALLISON HD Code (DTC) P0727 Engine Speed Input Circuit No Signal


• ALLISON HD Code (DTC) P0728 Engine Speed Input Circuit Intermittent


• ALLISON HD Code (DTC) P0730 Incorrect Gear Ratio


• ALLISON HD Code (DTC) P0731 Gear 1 Incorrect ratio


• ALLISON HD Code (DTC) P0732 Gear 2 Incorrect ratio


• ALLISON HD Code (DTC) P0733 Gear 3 Incorrect ratio


• ALLISON HD Code (DTC) P0734 Gear 4 Incorrect ratio


• ALLISON HD Code (DTC) P0735 Gear 5 Incorrect ratio


• ALLISON HD Code (DTC) P0736 Reverse incorrect gear ratio


• ALLISON HD Code (DTC) P0740 Torque Converter Clutch Circuit Malfuction


• ALLISON HD Code (DTC) P0741 Torque Converter Clutch Circuit Performance or Stuck Off


• ALLISON HD Code (DTC) P0742 Torque Converter Clutch Circuit Stuck On


• ALLISON HD Code (DTC) P0743 Torque Converter Clutch Circuit Electrical


• ALLISON HD Code (DTC) P0744 Torque Converter Clutch Circuit Intermittent


• ALLISON HD Code (DTC) P0745 Pressure Control Solenoid Malfunction


• ALLISON HD Code (DTC) P0746 Pressure Control Solenoid Performance or Stuck Off


• ALLISON HD Code (DTC) P0747 Pressure Control Solenoid Stuck On


• ALLISON HD Code (DTC) P0748 Pressure Control Solenoid Electrical


• ALLISON HD Code (DTC) P0749 Pressure Control Solenoid Intermittent


• ALLISON HD Code (DTC) P0750 Shift Solenoid A Malfunction


• ALLISON HD Code (DTC) P0751 Shift Solenoid A Performance or Stuck Off/1-2 Shift Solenoid Valve Performance


• ALLISON HD Code (DTC) P0752 Shift Solenoid A Stuck On


• ALLISON HD Code (DTC) P0753 Shift Solenoid A Electrical/1-2 Shift Solenoid Circuit Electrical


• ALLISON HD Code (DTC) P0754 Shift Solenoid A Intermittent


• ALLISON HD Code (DTC) P0755 Shift Solenoid B Malfunction


• ALLISON HD Code (DTC) P0756 Shift Solenoid B Performance or Stuck Off/2-3 Shift Solenoid Valve Performance


• ALLISON HD Code (DTC) P0757 Shift Solenoid B Stuck On


• ALLISON HD Code (DTC) P0758 Shift Solenoid B Electrical/2-3 Shift Solenoid Circuit Electrical


• ALLISON HD Code (DTC) P0759 Shift Solenoid B Intermittent


• ALLISON HD Code (DTC) P0760 Shift Solenoid C Malfunction


• ALLISON HD Code (DTC) P0761 Shift Solenoid C Performance or Stuck Off


• ALLISON HD Code (DTC) P0762 Shift Solenoid C Stuck On


• ALLISON HD Code (DTC) P0763 Shift Solenoid C Electrical


• ALLISON HD Code (DTC) P0764 Shift Solenoid C Intermittent


• ALLISON HD Code (DTC) P0765 Shift Solenoid D Malfunction


• ALLISON HD Code (DTC) P0766 Shift Solenoid D Performance or Stuck Off


• ALLISON HD Code (DTC) P0767 Shift Solenoid D Stuck On


• ALLISON HD Code (DTC) P0768 Shift Solenoid D Electrical


• ALLISON HD Code (DTC) P0769 Shift Solenoid D Intermittent


• ALLISON HD Code (DTC) P0770 Shift Solenoid E Malfunction


• ALLISON HD Code (DTC) P0771 Shift Solenoid E Performance or Stuck Off


• ALLISON HD Code (DTC) P0772 Shift Solenoid E Stuck On


• ALLISON HD Code (DTC) P0773 Shift Solenoid E Electrical


• ALLISON HD Code (DTC) P0774 Shift Solenoid E Intermittent


• ALLISON HD Code (DTC) P0775 Pressure Control Solenoid B Malfunction


• ALLISON HD Code (DTC) P0776 Pressure Control Solenoid B Performance


• ALLISON HD Code (DTC) P0777 Pressure Control Solenoid B Stuck On


• ALLISON HD Code (DTC) P0778 Pressure Control Solenoid B Electrical


• ALLISON HD Code (DTC) P0779 Pressure Control Solenoid B Intermittent


• ALLISON HD Code (DTC) P0780 Shift Malfunction


• ALLISON HD Code (DTC) P0781 1-2 Shift Malfunction


• ALLISON HD Code (DTC) P0782 2-3 Shift Malfunction


• ALLISON HD Code (DTC) P0783 3-4 Shift Malfunction


• ALLISON HD Code (DTC) P0784 4-5 Shift Malfunction


• ALLISON HD Code (DTC) P0785 Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical


• ALLISON HD Code (DTC) P0786 Shift/Timing Solenoid Range/Performance


• ALLISON HD Code (DTC) P0787 Shift/Timing Solenoid Low


• ALLISON HD Code (DTC) P0788 Shift/Timing Solenoid High


• ALLISON HD Code (DTC) P0789 Shift/Timing Solenoid Intermittent


• ALLISON HD Code (DTC) P0790 Normal/Performance Switch Circuit Malfunction


• ALLISON HD Code (DTC) P0791 Intermediate Shaft Speed Sensor Circuit


• ALLISON HD Code (DTC) P0792 Intermediate Shaft Speed Sensor Circuit Range/Performance


• ALLISON HD Code (DTC) P0793 Intermediate Shaft Speed Sensor Circuit No signal


• ALLISON HD Code (DTC) P0794 Intermediate Shaft Speed Sensor Circuit Intermittent


• ALLISON HD Code (DTC) P0795 Pressure Control Solenoid C


• ALLISON HD Code (DTC) P0796 Pressure Control Solenoid C Performance or Stuck off


• ALLISON HD Code (DTC) P0797 Pressure Control Solenoid C Stuck On


• ALLISON HD Code (DTC) P0798 Pressure Control Solenoid C Electrical


• ALLISON HD Code (DTC) P0799 Pressure Control Solenoid C Intermittent


• ALLISON HD Code (DTC) P0801 Reverse Inhibit Control Circuit Malfunction


• ALLISON HD Code (DTC) P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction


• ALLISON HD Code (DTC) P0804 1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction


• ALLISON HD Code (DTC) P0805 Clutch Position Sensor Circuit Malfunction


• ALLISON HD Code (DTC) P0806 Clutch Position Sensor Circuit Range/Performance Malfunction


• ALLISON HD Code (DTC) P0807 Clutch Position Sensor Circuit Low Malfunction


• ALLISON HD Code (DTC) P0808 Clutch Position Sensor Circuit High Malfunction


• ALLISON HD Code (DTC) P0809 Clutch Position Sensor Circuit Intermittent Malfunction


• ALLISON HD Code (DTC) P0810 Clutch Position Control Error


• ALLISON HD Code (DTC) P0811 Excessive Clutch Slippage


• ALLISON HD Code (DTC) P0812 Reverse Input Circuit


• ALLISON HD Code (DTC) P0813 Reverse Output Circuit


• ALLISON HD Code (DTC) P0814 Transmission Range Display Circuit


• ALLISON HD Code (DTC) P0815 Upshift Switch Circuit


• ALLISON HD Code (DTC) P0816 Downshift Switch Circuit


• ALLISON HD Code (DTC) P0817 Starter Disable Circuit


• ALLISON HD Code (DTC) P0818 Driveline Disconnect Switch Input Circuit


• ALLISON HD Code (DTC) P0819 Up and Down Shift Switch to Transmission Range Correlation


• ALLISON HD Code (DTC) P0820 Gear Lever X - Y Position Sensor Circuit


• ALLISON HD Code (DTC) P0821 Gear Lever X Position Circuit


• ALLISON HD Code (DTC) P0822 Gear Lever Y Position Circuit


• ALLISON HD Code (DTC) P0823 Gear Lever X Position Circuit Intermittent


• ALLISON HD Code (DTC) P0824 Gear Lever Y Position Circuit Intermittent


• ALLISON HD Code (DTC) P0825 Gear Lever Push - Pull Switch (Shift Anticipate)


• ALLISON HD Code (DTC) P0826 Up and Down Switch Input Circuit


• ALLISON HD Code (DTC) P0827 Up and Down Switch Input Circuit Low


• ALLISON HD Code (DTC) P0828 Up and Down Switch Input Circuit High


• ALLISON HD Code (DTC) P0829 5-6 Shift


• ALLISON HD Code (DTC) P0830 Clutch Pedal Switch A Circuit


• ALLISON HD Code (DTC) P0831 Clutch Pedal Switch A Circuit Low


• ALLISON HD Code (DTC) P0832 Clutch Pedal Switch A Circuit High


• ALLISON HD Code (DTC) P0833 Clutch Pedal Switch B Circuit


• ALLISON HD Code (DTC) P0834 Clutch Pedal Switch B Circuit Low


• ALLISON HD Code (DTC) P0835 Clutch Pedal Switch B Circuit High


• ALLISON HD Code (DTC) P0836 Four Wheel Drive (4WD) Switch Circuit


• ALLISON HD Code (DTC) P0837 Four Wheel Drive (4WD) Switch Circuit Range/Performance


• ALLISON HD Code (DTC) P0838 Four Wheel Drive (4WD) Switch Circuit Low


• ALLISON HD Code (DTC) P0839 Four Wheel Drive (4WD) Switch Circuit High


• ALLISON HD Code (DTC) P0840 Transmission Fluid Pressure Sensor/Switch A Circuit


• ALLISON HD Code (DTC) P0841 Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance


• ALLISON HD Code (DTC) P0842 Transmission Fluid Pressure Sensor/Switch A Circuit Low


• ALLISON HD Code (DTC) P0843 Transmission Fluid Pressure Sensor/Switch A Circuit High


• ALLISON HD Code (DTC) P0844 Transmission Fluid Pressure Sensor/Switch A Circuit Intermittent


• ALLISON HD Code (DTC) P0845 Transmission Fluid Pressure Sensor/Switch B Circuit


• ALLISON HD Code (DTC) P0846 Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance


• ALLISON HD Code (DTC) P0847 Transmission Fluid Pressure Sensor/Switch B Circuit Low


• ALLISON HD Code (DTC) P0848 Transmission Fluid Pressure Sensor/Switch B Circuit High


• ALLISON HD Code (DTC) P0849 Transmission Fluid Pressure Sensor/Switch B Circuit Intermittent


• ALLISON HD Code (DTC) P0850 Park / Neutral Switch Input Circuit


• ALLISON HD Code (DTC) P0851 Park / Neutral Switch Input Circuit Low


• ALLISON HD Code (DTC) P0852 Park / Neutral Switch Input Circuit High


• ALLISON HD Code (DTC) P0853 Drive Switch Input Circuit


• ALLISON HD Code (DTC) P0854 Drive Switch Input Circuit Low


• ALLISON HD Code (DTC) P0855 Drive Switch Input Circuit High


• ALLISON HD Code (DTC) P0856 Traction Control Input Signal


• ALLISON HD Code (DTC) P0857 Traction Control Input Signal Range/Performance


• ALLISON HD Code (DTC) P0858 Traction Control Input Signal Low


• ALLISON HD Code (DTC) P0859 Traction Control Input Signal High


• ALLISON HD Code (DTC) P0860 Gear Shift Module Communication Circuit


• ALLISON HD Code (DTC) P0861 Gear Shift Module Communication Circuit Low


• ALLISON HD Code (DTC) P0862 Gear Shift Module Communication Circuit High


• ALLISON HD Code (DTC) P0863 TCM Communication Circuit


• ALLISON HD Code (DTC) P0864 TCM Communication Circuit Range/Performance


• ALLISON HD Code (DTC) P0865 TCM Communication Circuit Low


• ALLISON HD Code (DTC) P0866 TCM Communication Circuit High


• ALLISON HD Code (DTC) P0867 Transmission Fluid Pressure


• ALLISON HD Code (DTC) P0868 Transmission Fluid Pressure Low


• ALLISON HD Code (DTC) P0869 Transmission Fluid Pressure High


• ALLISON HD Code (DTC) P0870 Transmission Fluid Pressure Sensor/Switch C Circuit


• ALLISON HD Code (DTC) P0871 Transmission Fluid Pressure Sensor/Switch C Circuit Range/Performance


• ALLISON HD Code (DTC) P0872 Transmission Fluid Pressure Sensor/Switch C Circuit Low


• ALLISON HD Code (DTC) P0873 Transmission Fluid Pressure Sensor/Switch C Circuit High


• ALLISON HD Code (DTC) P0874 Transmission Fluid Pressure Sensor/Switch C Circuit Intermittent


• ALLISON HD Code (DTC) P0875 Transmission Fluid Pressure Sensor/Switch D Circuit


• ALLISON HD Code (DTC) P0876 Transmission Fluid Pressure Sensor/Switch D Circuit Range/Performance


• ALLISON HD Code (DTC) P0877 Transmission Fluid Pressure Sensor/Switch D Circuit Low


• ALLISON HD Code (DTC) P0878 Transmission Fluid Pressure Sensor/Switch D Circuit High


• ALLISON HD Code (DTC) P0879 Transmission Fluid Pressure Sensor/Switch D Circuit Intermittent


• ALLISON HD Code (DTC) P0880 TCM Power Input Signal


• ALLISON HD Code (DTC) P0881 TCM Power Input Signal Range/Performance


• ALLISON HD Code (DTC) P0882 TCM Power Input Signal Low


• ALLISON HD Code (DTC) P0883 TCM Power Input Signal High


• ALLISON HD Code (DTC) P0884 TCM Power Input Signal Intermittent


• ALLISON HD Code (DTC) P0885 TCM Power Relay Control Circuit /Open


• ALLISON HD Code (DTC) P0886 TCM Power Relay Control Circuit Low


• ALLISON HD Code (DTC) P0887 TCM Power Relay Control Circuit High


• ALLISON HD Code (DTC) P0888 TCM Power Relay Sense Circuit


• ALLISON HD Code (DTC) P0889 TCM Power Relay Sense Circuit Range/Performance


• ALLISON HD Code (DTC) P0890 TCM Power Relay Sense Circuit Low


• ALLISON HD Code (DTC) P0891 TCM Power Relay Sense Circuit High


• ALLISON HD Code (DTC) P0892 TCM Power Relay Sense Circuit Intermittent


• ALLISON HD Code (DTC) P0893 Multiple Gears Engaged


• ALLISON HD Code (DTC) P0894 Transmission Component Slipping


• ALLISON HD Code (DTC) P0895 Shift Time Too Short


• ALLISON HD Code (DTC) P0896 Shift Time Too Long


• ALLISON HD Code (DTC) P0897 Transmission Fluid Deteriorated


• ALLISON HD Code (DTC) P0898 Transmission Control System MIL Request Circuit Low


• ALLISON HD Code (DTC) P0899 Transmission Control System MIL Request Circuit High


• ALLISON HD Code (DTC) P0900 Clutch Actuator Circuit / Open


• ALLISON HD Code (DTC) P0901 Clutch Actuator Circuit Range/Performance


• ALLISON HD Code (DTC) P0902 Clutch Actuator Circuit Low


• ALLISON HD Code (DTC) P0903 Clutch Actuator Circuit High


• ALLISON HD Code (DTC) P0904 Gate Select Position Circuit [senses left / right position]


• ALLISON HD Code (DTC) P0905 Gate Select Position Circuit Range/Performance


• ALLISON HD Code (DTC) P0906 Gate Select Position Circuit Low


• ALLISON HD Code (DTC) P0907 Gate Select Position Circuit High


• ALLISON HD Code (DTC) P0908 Gate Select Position Circuit Intermittent


• ALLISON HD Code (DTC) P0909 Gate Select Control Error


• ALLISON HD Code (DTC) P0910 Gate Select Actuator Circuit / Open [left / right motion]


• ALLISON HD Code (DTC) P0911 Gate Select Actuator Circuit Range/Performance


• ALLISON HD Code (DTC) P0912 Gate Select Actuator Circuit Low


• ALLISON HD Code (DTC) P0913 Gate Select Actuator Circuit High


• ALLISON HD Code (DTC) P0914 Gear Shift Position Circuit [senses forward / rearward position, odd / even gears]


• ALLISON HD Code (DTC) P0915 Gear Shift Position Circuit Range/Performance


• ALLISON HD Code (DTC) P0916 Gear Shift Position Circuit Low


• ALLISON HD Code (DTC) P0917 Gear Shift Position Circuit High


• ALLISON HD Code (DTC) P0918 Gear Shift Position Circuit Intermittent


• ALLISON HD Code (DTC) P0919 Gear Shift Position Control Error


• ALLISON HD Code (DTC) P0920 Gear Shift Forward Actuator Circuit / Open [forward motion, odd gears, 1,3,5]


• ALLISON HD Code (DTC) P0921 Gear Shift Foward Actuator Circuit Range/Performance


• ALLISON HD Code (DTC) P0922 Gear Shift Foward Actuator Circuit Low


• ALLISON HD Code (DTC) P0923 Gear Shift Foward Actuator Circuit High


• ALLISON HD Code (DTC) P0924 Gear Shift Reverse Actuator Circuit / Open [rearward motion, even gears, 2,4,6]


• ALLISON HD Code (DTC) P0925 Gear Shift Reverse Actuator Circuit Range/Performance


• ALLISON HD Code (DTC) P0926 Gear Shift Reverse Actuator Circuit Low


• ALLISON HD Code (DTC) P0927 Gear Shift Reverse Actuator Circuit High


• ALLISON HD Code (DTC) P0928 Gear Shift Lock Solenoid Circuit / Open


• ALLISON HD Code (DTC) P0929 Gear Shift Lock Solenoid Circuit Range/Performance


• ALLISON HD Code (DTC) P0930 Gear Shift Lock Solenoid Circuit Low


• ALLISON HD Code (DTC) P0931 Gear Shift Lock Solenoid Circuit High


• ALLISON HD Code (DTC) P0932 Hydraulic Pressure Sensor Circuit


• ALLISON HD Code (DTC) P0933 Hydraulic Pressure Sensor Range/Performance


• ALLISON HD Code (DTC) P0934 Hydraulic Pressure Sensor Circuit Low Input


• ALLISON HD Code (DTC) P0935 Hydraulic Pressure Sensor Circuit High Input


• ALLISON HD Code (DTC) P0936 Hydraulic Pressure Sensor Circuit Intermittent


• ALLISON HD Code (DTC) P0937 Hydraulic Oil Temperature Sensor Circuit


• ALLISON HD Code (DTC) P0938 Hydraulic Oil Temperature Sensor Range/Performance


• ALLISON HD Code (DTC) P0939 Hydraulic Oil Temperature Sensor Circuit Low Input


• ALLISON HD Code (DTC) P0940 Hydraulic Oil Temperature Sensor Circuit High Input


• ALLISON HD Code (DTC) P0941 Hydraulic Oil Temperature Sensor Circuit Intermittent


• ALLISON HD Code (DTC) P0942 Hydraulic Pressure Unit


• ALLISON HD Code (DTC) P0943 Hydraulic Pressure Unit Cycling Period Too Short


• ALLISON HD Code (DTC) P0944 Hydraulic Pressure Unit Loss of Pressure


• ALLISON HD Code (DTC) P0945 Hydraulic Pump Relay Circuit / Open


• ALLISON HD Code (DTC) P0946 Hydraulic Pump Relay Circuit Range/Performance


• ALLISON HD Code (DTC) P0947 Hydraulic Pump Relay Circuit Low


• ALLISON HD Code (DTC) P0948 Hydraulic Pump Relay Circuit High


• ALLISON HD Code (DTC) P0949 ASM Adaptive Learning Not Done


• ALLISON HD Code (DTC) P0950 ASM Control Circuit [Up / Down / Auto / etc]


• ALLISON HD Code (DTC) P0951 ASM Control Circuit Range/Performance


• ALLISON HD Code (DTC) P0952 ASM Control Circuit Low


• ALLISON HD Code (DTC) P0953 ASM Control Circuit High


• ALLISON HD Code (DTC) P0954 ASM Control Circuit Intermittent


• ALLISON HD Code (DTC) P0955 ASM Mode Circuit [Perf / Winter / Sport / etc]


• ALLISON HD Code (DTC) P0956 ASM Mode Circuit Range/Performance


• ALLISON HD Code (DTC) P0957 ASM Mode Circuit Low


• ALLISON HD Code (DTC) P0958 ASM Mode Circuit High


• ALLISON HD Code (DTC) P0959 ASM Mode Circuit Intermittent


• ALLISON HD Code (DTC) P0960 Pressure Control Solenoid A Control Circuit / Open


• ALLISON HD Code (DTC) P0961 Pressure Control Solenoid A Control Circuit Range/Performance


• ALLISON HD Code (DTC) P0962 Pressure Control Solenoid A Control Circuit Low


• ALLISON HD Code (DTC) P0963 Pressure Control Solenoid A Control Circuit High


• ALLISON HD Code (DTC) P0964 Pressure Control Solenoid B Control Circuit / Open


• ALLISON HD Code (DTC) P0965 Pressure Control Solenoid B Control Circuit Range/Performance


• ALLISON HD Code (DTC) P0966 Pressure Control Solenoid B Control Circuit Low


• ALLISON HD Code (DTC) P0967 Pressure Control Solenoid B Control Circuit High


• ALLISON HD Code (DTC) P0968 Pressure Control Solenoid C Control Circuit / Open


• ALLISON HD Code (DTC) P0969 Pressure Control Solenoid C Control Circuit Range/Performance


• ALLISON HD Code (DTC) P0970 Pressure Control Solenoid C Control Circuit Low


• ALLISON HD Code (DTC) P0971 Pressure Control Solenoid C Control Circuit High


• ALLISON HD Code (DTC) P0972 Shift Solenoid A Control Circuit Range/Performance


• ALLISON HD Code (DTC) P0973 Shift Solenoid A Control Circuit Low


• ALLISON HD Code (DTC) P0974 Shift Solenoid A Control Circuit High


• ALLISON HD Code (DTC) P0975 Shift Solenoid B Control Circuit Range/Performance


• ALLISON HD Code (DTC) P0976 Shift Solenoid B Control Circuit Low


• ALLISON HD Code (DTC) P0977 Shift Solenoid B Control Circuit High


• ALLISON HD Code (DTC) P0978 Shift Solenoid C Control Circuit Range/Performance


• ALLISON HD Code (DTC) P0979 Shift Solenoid C Control Circuit Low


• ALLISON HD Code (DTC) P0980 Shift Solenoid C Control Circuit High


• ALLISON HD Code (DTC) P0981 Shift Solenoid D Control Circuit Range/Performance


• ALLISON HD Code (DTC) P0982 Shift Solenoid D Control Circuit Low


• ALLISON HD Code (DTC) P0983 Shift Solenoid D Control Circuit High


• ALLISON HD Code (DTC) P0984 Shift Solenoid E Control Circuit Range/Performance


• ALLISON HD Code (DTC) P0985 Shift Solenoid E Control Circuit Low


• ALLISON HD Code (DTC) P0986 Shift Solenoid E Control Circuit High


• ALLISON HD Code (DTC) P0987 Transmission Fluid Pressure Sensor/Switch E Circuit


• ALLISON HD Code (DTC) P0988 Transmission Fluid Pressure Sensor/Switch E Circuit Range/Performance


• ALLISON HD Code (DTC) P0989 Transmission Fluid Pressure Sensor/Switch E Circuit Low


• ALLISON HD Code (DTC) P0990 Transmission Fluid Pressure Sensor/Switch E Circuit High


• ALLISON HD Code (DTC) P0991 Transmission Fluid Pressure Sensor/Switch E Circuit Intermittent


• ALLISON HD Code (DTC) P0992 Transmission Fluid Pressure Sensor/Switch F Circuit


• ALLISON HD Code (DTC) P0993 Transmission Fluid Pressure Sensor/Switch F Circuit Range/Performance


• ALLISON HD Code (DTC) P0994 Transmission Fluid Pressure Sensor/Switch F Circuit Low


• ALLISON HD Code (DTC) P0995 Transmission Fluid Pressure Sensor/Switch F Circuit High


• ALLISON HD Code (DTC) P0996 Transmission Fluid Pressure Sensor/Switch F Circuit Intermittent


• ALLISON HD Code (DTC) P0997 Shift Solenoid F Control Circuit Range/Performance


• ALLISON HD Code (DTC) P0998 Shift Solenoid F Control Circuit Low


• ALLISON HD Code (DTC) P0999 Shift Solenoid F Control Circuit High


• ALLISON HD Code (DTC) P1100 MAF Sensor Intermittent/ Check of all OBDII Systems Not Complete


• ALLISON HD Code (DTC) P1101 MAF Sensor Out Of Self Test Range./KOER Not Able To Complete KOER Aborted


• ALLISON HD Code (DTC) P1102 MAF Sensor In Range But Lower Than Expected


• ALLISON HD Code (DTC) P1103 MAF Sensor In Range But Higher Than Expected


• ALLISON HD Code (DTC) P1104 MAF Ground Malfunction


• ALLISON HD Code (DTC) P1105 Dual Alternator Upper Fault


• ALLISON HD Code (DTC) P1106 Dual Alternator Lower Fault/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage


• ALLISON HD Code (DTC) P1107 Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage


• ALLISON HD Code (DTC) P1108 Dual Alternator Battery Lamp Circuit Malfunction


• ALLISON HD Code (DTC) P1109 IAT - B Sensor Intermittent


• ALLISON HD Code (DTC) P1110 IAT Sensor (D/C) Open/Short


• ALLISON HD Code (DTC) P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage


• ALLISON HD Code (DTC) P1112 Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage


• ALLISON HD Code (DTC) P1113 IAT Sensor Open/Short


• ALLISON HD Code (DTC) P1114 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage/IAT - B Circuit Low Input


• ALLISON HD Code (DTC) P1115 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage/IAT - B Circuit High Input


• ALLISON HD Code (DTC) P1116 Engine Coolant sensor out of range/ECT Sensor Out Of Self Test Range


• ALLISON HD Code (DTC) P1117 Engine Coolant Sensor intermittent/ECT Sensor Intermittent


• ALLISON HD Code (DTC) P1118 Manifold Absolute Temperature Circuit Low Input


• ALLISON HD Code (DTC) P1119 Manifold Absolute Temperature Circuit High Input


• ALLISON HD Code (DTC) P1120 Throttle position sensor out of range


• ALLISON HD Code (DTC) P1121 Throttle Position (TP) Sensor Circuit Intermittent High Voltage


• ALLISON HD Code (DTC) P1122 Throttle Position (TP) Sensor Circuit Intermittent Low Voltage


• ALLISON HD Code (DTC) P1123 Throttle Position Sensor In Range But Higher Than Expected


• ALLISON HD Code (DTC) P1124 Throttle Position Sensor Out Of Self Test Range


• ALLISON HD Code (DTC) P1125 Throttle position sensor intermittent


• ALLISON HD Code (DTC) P1126 Throttle Position (Narrow Range) Sensor Circuit Malfunction


• ALLISON HD Code (DTC) P1135 Pedal Position Sensor A Circuit Intermittent


• ALLISON HD Code (DTC) P1174 Cam Sensor Fault


• ALLISON HD Code (DTC) P1175 Cam Control Fault


• ALLISON HD Code (DTC) P1176 Cam Calibration Fault


• ALLISON HD Code (DTC) P1177 Synchronization Fault


• ALLISON HD Code (DTC) P1270 Engine RPM Or Speed Limiter Reached


• ALLISON HD Code (DTC) P1285 Cylinder head over temp sensed


• ALLISON HD Code (DTC) P1288 Cylinder Head Temp Sensor Out Of Self Test Range


• ALLISON HD Code (DTC) P1289 Cylinder Head Temp Sensor High Input


• ALLISON HD Code (DTC) P1290 Cylinder Head Temp Sensor Low Input


• ALLISON HD Code (DTC) P1299 Cylinder Head Overtemperature Protection Active


• ALLISON HD Code (DTC) P1306 Kickdown Relay Pull - In Circuit Fault


• ALLISON HD Code (DTC) P1307 Kickdown Relay Hold Circuit Fault


• ALLISON HD Code (DTC) P1336 Crank / Cam Sensor Range / Performance


• ALLISON HD Code (DTC) P1340 Camshaft Position Sensor B Circuit Malfunction


• ALLISON HD Code (DTC) P1341 Camshaft Position Sensor B Range / Performance


• ALLISON HD Code (DTC) P1345 SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft Position - Camshaft Position Correlation


• ALLISON HD Code (DTC) P1381 Variable Cam Timing Overadvanced (Bank #1)/ Misfire Detected - No Communication with BCM


• ALLISON HD Code (DTC) P1382 Variable Cam Timing Solenoid #1 Circuit Malfunction


• ALLISON HD Code (DTC) P1383 Variable Cam Timing Overretarded (Bank #1)


• ALLISON HD Code (DTC) P1384 VVT Solenoid A Malfunction


• ALLISON HD Code (DTC) P1385 Variable Cam Timing Solenoid B Malfunction


• ALLISON HD Code (DTC) P1386 Variable Cam Timing Overadvanced (Bank #2)


• ALLISON HD Code (DTC) P1387 Variable Cam Timing Solenoid #2 Circuit Malfunction


• ALLISON HD Code (DTC) P1388 Variable Cam Timing Overretarded (Bank #2)


• ALLISON HD Code (DTC) P1404 IAT - B Circuit Malfunction/ Exhaust Gas Recirculation Closed Position Performance


• ALLISON HD Code (DTC) P1500 Vehicle Speed Sensor Intermittent


• ALLISON HD Code (DTC) P1501 Vehicle Speed Sensor Out Of Self Test Range


• ALLISON HD Code (DTC) P1502 Vehicle Speed Sensor Intermittent Malfunction


• ALLISON HD Code (DTC) P1503 Auxillary Speed Sensor Fault


• ALLISON HD Code (DTC) P1514 High Load Neutral/Drive Fault


• ALLISON HD Code (DTC) P1515 Electric Current Circuit Malfunction


• ALLISON HD Code (DTC) P1571 Brake Switch Malfunction


• ALLISON HD Code (DTC) P1572 Brake Pedal Switch Circuit Malfunction


• ALLISON HD Code (DTC) P1573 Throttle Position Not Available


• ALLISON HD Code (DTC) P1574 Throttle Position Sensor Disagreement btwn Sensors


• ALLISON HD Code (DTC) P1575 Pedal Position Out of Self Test Range


• ALLISON HD Code (DTC) P1576 Pedal Position Not Available


• ALLISON HD Code (DTC) P1577 Pedal Position Sensor Disagreement btwn Sensors


• ALLISON HD Code (DTC) P1578 ETC Power Less Than Demand


• ALLISON HD Code (DTC) P1579 ETC In Power Limiting Mode


• ALLISON HD Code (DTC) P1580 Electronic Throttle Monitor PCM Override


• ALLISON HD Code (DTC) P1581 Electronic Throttle Monitor Malfunction


• ALLISON HD Code (DTC) P1582 Electronic Throttle Monitor Data Available


• ALLISON HD Code (DTC) P1583 Electronic Throttle Monitor Cruise Disable


• ALLISON HD Code (DTC) P1584 TCU Detected IPE Circuit Malfunction


• ALLISON HD Code (DTC) P1585 Throttle Control Unit Malfunction


• ALLISON HD Code (DTC) P1586 Throttle Control Unit Throttle Position Malfunction


• ALLISON HD Code (DTC) P1587 Throttle Control Unit Modulated Command Malfunction


• ALLISON HD Code (DTC) P1588 Throttle Control Unit Detected Loss of Return Spring


• ALLISON HD Code (DTC) P1589 TCU Unable To Control Desired Throttle Angle


• ALLISON HD Code (DTC) P1600 Loss of KAM Power; Open Circuit


• ALLISON HD Code (DTC) P1601 ECM/TCM Serial Communication Error


• ALLISON HD Code (DTC) P1602 Immobilizer/ECM Communication Error


• ALLISON HD Code (DTC) P1603 EEPROM Malfunction


• ALLISON HD Code (DTC) P1604 Code Word Unregistered


• ALLISON HD Code (DTC) P1605 Keep Alive Memory Test Failure


• ALLISON HD Code (DTC) P1606 ECM Control Relay O/P Circuit Malfunction


• ALLISON HD Code (DTC) P1607 MIL O/P Circuit Malfunction


• ALLISON HD Code (DTC) P1608 Internal ECM Malfunction


• ALLISON HD Code (DTC) P1609 Diagnostic Lamp Driver Fault


• ALLISON HD Code (DTC) P1621 Control Module Long Term Memory Performance/ Immobilizer Code Words Do Not Match


• ALLISON HD Code (DTC) P1622 Immobilizer ID Does Not Match


• ALLISON HD Code (DTC) P1623 Immobilizer Code Word/ID Number Write Failure


• ALLISON HD Code (DTC) P1624 Anti Theft System


• ALLISON HD Code (DTC) P1625 B+ Supply To VCRM Fan Circuit Malfunction


• ALLISON HD Code (DTC) P1626 Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit Malfunction


• ALLISON HD Code (DTC) P1627 Module Supply Voltage Out Of Range


• ALLISON HD Code (DTC) P1628 Module Ignition Supply Input Malfunction


• ALLISON HD Code (DTC) P1629 Internal Voltage Regulator Malfunction


• ALLISON HD Code (DTC) P1630 Internal Vref Malfunction


• ALLISON HD Code (DTC) P1631 Theft Deterrent Start Enable Signal Not Correct/ Main Relay Malfunction (Power Hold)


• ALLISON HD Code (DTC) P1633 KAM Voltage Too Low


• ALLISON HD Code (DTC) P1634 Data Output Link Circuit Failure


• ALLISON HD Code (DTC) P1635 Tire / Axle Ratio Out of Acceptable Range


• ALLISON HD Code (DTC) P1700 Transmission Indeterminate Failure (Failed to Neutral)


• ALLISON HD Code (DTC) P1701 Reverse Engagement Error


• ALLISON HD Code (DTC) P1702 TRS Circuit Intermittent Malfunction


• ALLISON HD Code (DTC) P1703 Brake Switch Out Of Self Test Range


• ALLISON HD Code (DTC) P1704 Digital TRS Failed to Transition States in KOEO / KOER


• ALLISON HD Code (DTC) P1705 Not in P or N During KOEO / KOER


• ALLISON HD Code (DTC) P1706 High Vehicle Speed Observed in Park


• ALLISON HD Code (DTC) P1707 Transfer Case Neutral Indicator Hard Fault Present


• ALLISON HD Code (DTC) P1708 Clutch Switch Circuit Malfunction


• ALLISON HD Code (DTC) P1709 PNP Switch Out Of Self Test Range


• ALLISON HD Code (DTC) P1711 TFT Sensor Out Of Self Test Range


• ALLISON HD Code (DTC) P1712 Trans Torque Reduction Request Signal Malfunction


• ALLISON HD Code (DTC) P1713 TFT Sensor In Range Failure Low Value


• ALLISON HD Code (DTC) P1714 SSA Inductive Signature Malfunction


• ALLISON HD Code (DTC) P1715 SSB Inductive Signature Malfunction


• ALLISON HD Code (DTC) P1716 SSC Inductive Signature Malfunction


• ALLISON HD Code (DTC) P1717 SSD Inductive Signature Malfunction


• ALLISON HD Code (DTC) P1718 TFT Sensor In Range Failure High


• ALLISON HD Code (DTC) P1720 Vehicle Speed (Meter) Circuit Malfunction


• ALLISON HD Code (DTC) P1721 Gear 1 Incorrect Ratio


• ALLISON HD Code (DTC) P1722 Gear 2 Incorrect Ratio


• ALLISON HD Code (DTC) P1723 Gear 3 incorrect Ratio


• ALLISON HD Code (DTC) P1724 Gear 4 Incorrect Ratio


• ALLISON HD Code (DTC) P1725 Insufficient Engine Speed Increase During Self Test


• ALLISON HD Code (DTC) P1726 Insufficient Engine Speed Decrease During Self Test


• ALLISON HD Code (DTC) P1727 Coast Clutch Solenoid Inductive Signature Malfunction


• ALLISON HD Code (DTC) P1728 Transmission Slip Error


• ALLISON HD Code (DTC) P1729 4x4 Low Switch Error


• ALLISON HD Code (DTC) P1730 Gear Control Malfunction 2,3,5


• ALLISON HD Code (DTC) P1731 1-2 Shift Malfunction


• ALLISON HD Code (DTC) P1732 2-3 Shift Malfunction


• ALLISON HD Code (DTC) P1733 3-4 Shift Malfunction


• ALLISON HD Code (DTC) P1734 Gear Control Malfunction


• ALLISON HD Code (DTC) P1735 First Gear Switch Circuit Malfunction


• ALLISON HD Code (DTC) P1736 Second Gear Switch Circuit Malfunction


• ALLISON HD Code (DTC) P1737 Lockup Solenoid System


• ALLISON HD Code (DTC) P1738 Shift Time Error


• ALLISON HD Code (DTC) P1739 Slip Solenoid System


• ALLISON HD Code (DTC) P1740 Torque Converter Clutch Inductive Signature Malfunction


• ALLISON HD Code (DTC) P1741 Torque Converter Clutch Control Error


• ALLISON HD Code (DTC) P1742 Torque Converter Clutch Solenoid Failed On


• ALLISON HD Code (DTC) P1743 Torque Converter Clutch Solenoid Failied On


• ALLISON HD Code (DTC) P1744 Torque Converter Clutch System Performance


• ALLISON HD Code (DTC) P1745 Line Pressure Solenoid System


• ALLISON HD Code (DTC) P1746 Pressure Control Solenoid 'A' Open Circuit


• ALLISON HD Code (DTC) P1747 Pressure Control Solenoid 'A' Short Circuit


• ALLISON HD Code (DTC) P1748 EPC Malfunction


• ALLISON HD Code (DTC) P1749 Pressure Control Solenoid Failed Low


• ALLISON HD Code (DTC) P1751 Shift Solenoid A Performance


• ALLISON HD Code (DTC) P1754 Coast Clutch Solenoid Circuit Malfunction


• ALLISON HD Code (DTC) P1755 Intermediate Speed Sensor (ISS) Malfunction


• ALLISON HD Code (DTC) P1756 Shift Solenoid B Performance


• ALLISON HD Code (DTC) P1760 Pressure Control Solenoid 'A' Short Circuit


• ALLISON HD Code (DTC) P1761 Shift Solenoid C Performance


• ALLISON HD Code (DTC) P1762 Overdrive Band Failed Off


• ALLISON HD Code (DTC) P1765 Timing Solenoid Circuit Malfunction


• ALLISON HD Code (DTC) P1767 Torque Converter Clutch Circuit Malfunction


• ALLISON HD Code (DTC) P1768 Performance / Normal / Winter Mode Input Malfunction


• ALLISON HD Code (DTC) P1769 AG4 Transmission Torque Modulation Fault


• ALLISON HD Code (DTC) P1770 Clutch Solenoid Circuit Malfunction


• ALLISON HD Code (DTC) P1775 Transmission System MIL Fault


• ALLISON HD Code (DTC) P1776 Ignition Retard Request Duration Fault


• ALLISON HD Code (DTC) P1777 Ignition Retard Request Circuit Fault


• ALLISON HD Code (DTC) P1778 Transmission Reverse I/P Circuit Malfunction


• ALLISON HD Code (DTC) P1779 TCIL Circuit Malfunction


• ALLISON HD Code (DTC) P1780 Trans Control Switch (O/D Cancel) Out of Self Test Range


• ALLISON HD Code (DTC) P1781 4X4 Switch Out of Self Test Range


• ALLISON HD Code (DTC) P1782 P/ES Circuit Out Of Self Test Range


• ALLISON HD Code (DTC) P1783 Transmission Overtemperature Condition


• ALLISON HD Code (DTC) P1784 Transmission Mechanical Failure - First And Reverse


• ALLISON HD Code (DTC) P1785 Transmission Mechanical Failure - First And Second


• ALLISON HD Code (DTC) P1786 3-2 Downshift Error


• ALLISON HD Code (DTC) P1787 2-1 Downshift Error


• ALLISON HD Code (DTC) P1788 Pressure Control Solenoid 'B' Open Circuit


• ALLISON HD Code (DTC) P1789 Pressure Control Solenoid 'B' Short Circuit


• ALLISON HD Code (DTC) P1790 TP (Mechanical) Circuit Malfunction


• ALLISON HD Code (DTC) P1791 TP (Electric) Circuit Malfunction


• ALLISON HD Code (DTC) P1792 Barometer Pressure Circuit Malfunction


• ALLISON HD Code (DTC) P1793 Intake Air Volume Circuit Malfunction


• ALLISON HD Code (DTC) P1794 Battery Voltage Circuit Malfunction


• ALLISON HD Code (DTC) P1795 Idle Switch Circuit Malfunction


• ALLISON HD Code (DTC) P1796 Kick Down Switch Circuit Malfunction


• ALLISON HD Code (DTC) P1797 Neutral Switch Circuit Malfunction


• ALLISON HD Code (DTC) P1798 Coolant Temperature Circuit Malfunction


• ALLISON HD Code (DTC) P1799 Hold Switch Circuit Malfunction


• ALLISON HD Code (DTC) P1800 Transmission Clutch Interlock Safety Switch Circuit Failure


• ALLISON HD Code (DTC) P1801 Transmission Clutch Interlock Safety Switch Open Circuit


• ALLISON HD Code (DTC) P1802 Transmission Clutch Interlock Safety Switch Short Circuit To Battery


• ALLISON HD Code (DTC) P1803 Transmission Clutch Interlock Safety Switch Short Circuit To Ground


• ALLISON HD Code (DTC) P1804 Transmission 4-Wheel Drive High Indicator Circuit Failure


• ALLISON HD Code (DTC) P1805 Transmission 4-Wheel Drive High Indicator Open Circuit


• ALLISON HD Code (DTC) P1806 Transmission 4-Wheel Drive High Indicator Short Circuit To Battery


• ALLISON HD Code (DTC) P1807 Transmission 4-Wheel Drive High Indicator Short Circuit To Ground


• ALLISON HD Code (DTC) P1808 Transmission 4-Wheel Drive Low Indicator Circuit Failure


• ALLISON HD Code (DTC) P1809 Transmission 4-Wheel Drive Low Indicator Open Circuit


• ALLISON HD Code (DTC) P1810 TFP Valve Position Switch Circuit/ Transmission 4-Wheel Drive Low Indicator Short Circuit To Battery


• ALLISON HD Code (DTC) P1811 Transmission 4-Wheel Drive Low Indicator Short Circuit To Ground


• ALLISON HD Code (DTC) P1812 Transmission 4-Wheel Drive Mode Select Circuit Failure


• ALLISON HD Code (DTC) P1813 Transmission 4-Wheel Drive Mode Select Open Circuit


• ALLISON HD Code (DTC) P1814 Transmission 4-Wheel Drive Mode Select Short Circuit To Battery


• ALLISON HD Code (DTC) P1815 Transmission 4-Wheel Drive Mode Select Short Circuit To Ground


• ALLISON HD Code (DTC) P1816 Transmission Neutral Safety Switch Circuit Failure


• ALLISON HD Code (DTC) P1817 Transmission Neutral Safety Switch Open Circuit


• ALLISON HD Code (DTC) P1818 Transmission Neutral Safety Switch Short Circuit To Battery


• ALLISON HD Code (DTC) P1819 Transmission Neutral Safety Switch Short Circuit To Ground


• ALLISON HD Code (DTC) P1820 Transmission Transfer Case Clockwise Shift Relay Coil Circuit Failure


• ALLISON HD Code (DTC) P1821 Transmission Transfer Case Clockwise Shift Relay Coil Open Circuit


• ALLISON HD Code (DTC) P1822 Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery


• ALLISON HD Code (DTC) P1823 Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Ground


• ALLISON HD Code (DTC) P1824 Transmission 4-Wheel Drive Clutch Relay Circuit Failure


• ALLISON HD Code (DTC) P1825 Transmission 4-Wheel Drive Clutch Relay Open Circuit


• ALLISON HD Code (DTC) P1826 Transmission 4-Wheel Drive Low Clutch Relay Circuit To Battery


• ALLISON HD Code (DTC) P1827 Transmission 4-Wheel Drive Low Clutch Relay Circuit To Ground


• ALLISON HD Code (DTC) P1828 Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure


• ALLISON HD Code (DTC) P1829 Transmission Transfer Case Counter Clockwise Shift Relay Coil Open Circuit


• ALLISON HD Code (DTC) P1830 Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Battery


• ALLISON HD Code (DTC) P1831 Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Ground


• ALLISON HD Code (DTC) P1832 Transmission Transfer Case Differential Lock-Up Solenoid Circuit Failure


• ALLISON HD Code (DTC) P1833 Transmission Transfer Case Differential Lock-Up Solenoid Open Circuit


• ALLISON HD Code (DTC) P1834 Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Battery


• ALLISON HD Code (DTC) P1835 Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Ground


• ALLISON HD Code (DTC) P1836 Transmission Transfer Case Front Shaft Speed Sensor Circuit Failure


• ALLISON HD Code (DTC) P1837 Transmission Transfer Case Rear Shaft Speed Sensor Circuit Failure


• ALLISON HD Code (DTC) P1838 Transmission Transfer Case Shift Motor Circuit Failure


• ALLISON HD Code (DTC) P1839 Transmission Transfer Case Shift Motor Open Circuit


• ALLISON HD Code (DTC) P1840 Transmission Transfer Case Shift Motor Short Circuit To Battery


• ALLISON HD Code (DTC) P1841 Transmission Transfer Case Shift Motor Short Circuit To Ground


• ALLISON HD Code (DTC) P1842 Transmission Transfer Case Differential Lock-Up Feedback Switch Circuit Failure


• ALLISON HD Code (DTC) P1843 Transmission Transfer Case Differential Lock-Up Feedback Switch Open Circuit


• ALLISON HD Code (DTC) P1844 Transmission Transfer Case Differential Lock-Up Feedback Switch Short Circuit To Battery


• ALLISON HD Code (DTC) P1845 Transmission Transfer Case Differential Lock-Up Feedback Switch Short Circuit To Ground


• ALLISON HD Code (DTC) P1846 Transmission Transfer Case Contact Plate 'A' Circuit Failure


• ALLISON HD Code (DTC) P1847 Transmission Transfer Case Contact Plate 'A' Open Circuit


• ALLISON HD Code (DTC) P1848 Transmission Transfer Case Contact Plate 'A' Short Circuit To Battery


• ALLISON HD Code (DTC) P1849 Transmission Transfer Case Contact Plate 'A' Short Circuit To Ground


• ALLISON HD Code (DTC) P1850 Transmission Transfer Case Contact Plate 'B' Circuit Failure


• ALLISON HD Code (DTC) P1851 Transmission Transfer Case Contact Plate 'B' Open Circuit


• ALLISON HD Code (DTC) P1852 Transmission Transfer Case Contact Plate 'B' Short Circuit To Battery


• ALLISON HD Code (DTC) P1853 Transmission Transfer Case Contact Plate 'B' Short Circuit To Ground


• ALLISON HD Code (DTC) P1854 Transmission Transfer Case Contact Plate 'C' Circuit Failure


• ALLISON HD Code (DTC) P1855 Transmission Transfer Case Contact Plate 'C' Open Circuit


• ALLISON HD Code (DTC) P1856 Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery


• ALLISON HD Code (DTC) P1857 Transmission Transfer Case Contact Plate 'C' Short Circuit To Ground


• ALLISON HD Code (DTC) P1858 Transmission Transfer Case Contact Plate 'D' Circuit Failure


• ALLISON HD Code (DTC) P1859 Transmission Transfer Case Contact Plate 'D' Open Circuit


• ALLISON HD Code (DTC) P1860 TCC PWM Solenoid Circuit Electrical/ Transmission Transfer Case Contact Plate 'D' Short Circuit To Battery


• ALLISON HD Code (DTC) P1861 Transmission Transfer Case Contact Plate 'D' Short Circuit To Ground


• ALLISON HD Code (DTC) P1862 Transmission Transfer Case Contact Plate Power Circuit Failure


• ALLISON HD Code (DTC) P1863 Transmission Transfer Case Contact Plate Power Open Circuit


• ALLISON HD Code (DTC) P1864 Transmission Transfer Case Contact Plate Power Short To Battery


• ALLISON HD Code (DTC) P1865 Transmission Transfer Case Contact Plate Power Short To Ground


• ALLISON HD Code (DTC) P1866 Transmission Transfer Case System Concern - Servicing Required


• ALLISON HD Code (DTC) P1867 Transmission Transfer Case Contact Plate General Circuit Failure


• ALLISON HD Code (DTC) P1868 Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit Failure


• ALLISON HD Code (DTC) P1869 Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit Short To Battery


• ALLISON HD Code (DTC) P1870 Transmission Component Slipping/ Transmission Mechanical Transfer Case 4x4 Switch Circuit Failure


• ALLISON HD Code (DTC) P1871 Transmission Mechanical Transfer Case 4x4 Switch Circuit Short To Battery


• ALLISON HD Code (DTC) P1872 Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Failure


• ALLISON HD Code (DTC) P1873 Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Short To Battery


• ALLISON HD Code (DTC) P1874 Transmission Automatic Hall Effect Sensor Power Circuit Failure


• ALLISON HD Code (DTC) P1875 Transmission Automatic Hall Effect Sensor Power Circuit Short To Battery / 4WD Low Switch Circuit Electrical


• ALLISON HD Code (DTC) P1876 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure


• ALLISON HD Code (DTC) P1877 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short To Battery


• ALLISON HD Code (DTC) P1878 Transmission Transfer Case Disengaged Solenoid Circuit Failure


• ALLISON HD Code (DTC) P1879 Transmission Transfer Case Disengaged Solenoid Open Circuit


• ALLISON HD Code (DTC) P1880 Transmission Transfer Case Disengaged Solenoid Short to Battery


• ALLISON HD Code (DTC) P1881 Engine Coolant Level Switch Circuit Failure, GEM


• ALLISON HD Code (DTC) P1882 Engine Coolant Level Switch Circuit Short to Ground


• ALLISON HD Code (DTC) P1883 Engine Coolant Level Switch Circuit Failure, GEM


• ALLISON HD Code (DTC) P1884 Engine Coolant Level Lamp Circuit Short to Ground


• ALLISON HD Code (DTC) P1885 Transmission Transfer Case Disengaged Solenoid Short to Ground


• ALLISON HD Code (DTC) P1886 4X4 Initialization Failure


• ALLISON HD Code (DTC) P1890 Transmission 4WD Mode Select Return Input Circuit Failure


• ALLISON HD Code (DTC) P1891 Transmission Transfer Case Contact Plate Ground Return Open Circuit


• ALLISON HD Code (DTC) P1900 OSS Circuit Intermittent Malfunction


• ALLISON HD Code (DTC) P1901 TSS Circuit Intermittent Malfunction


• ALLISON HD Code (DTC) P1902 Pressure Control Solenoid 'B' Intermittent Short


• ALLISON HD Code (DTC) P1903 Pressure Control Solenoid 'C' Short Circuit


• ALLISON HD Code (DTC) P1904 Pressure Control Solenoid 'C' Open Circuit


• ALLISON HD Code (DTC) P1905 Pressure Control Solenoid 'C' Intermittent Short


• ALLISON HD Code (DTC) P1906 Kickdown Pull Relay Open or Short Circuit to Ground


• ALLISON HD Code (DTC) P1907 Kickdown Hold Relay Open or Short Circuit to Ground


• ALLISON HD Code (DTC) P1908 Transmission Pressure Circuit Solenoid Open or Short to Ground


• ALLISON HD Code (DTC) P1909 Trans Temp Sensor Circuit Open or Shorted to Pwr or Gnd


• ALLISON HD Code (DTC) P1910 VFS A Pressure Output Failed Low


• ALLISON HD Code (DTC) P1911 VFS B Pressure Output Failed Low


• ALLISON HD Code (DTC) P1912 VFS C Pressure Output Failed Low


• ALLISON HD Code (DTC) P1913 Pressure Switch A Circuit Malfunction


• ALLISON HD Code (DTC) P1914 Manually Shifted Automatic (MSA) Sw Circuit Malf


• ALLISON HD Code (DTC) P1915 Reverse Switch Circuit Malfunction


• ALLISON HD Code (DTC) P1916 High Clutch Drum Speed Sensor Malfunction


• ALLISON HD Code (DTC) P1917 High Clutch Drum Speed Sensor Intermittent


• ALLISON HD Code (DTC) P1918 Transmission Range Display Circuit Malfunction


• ALLISON HD Code (DTC) C1091 Speed Wheel Sensor All Coherency Failure


• ALLISON HD Code (DTC) C1116 Starter Motor Circuit Failure


• ALLISON HD Code (DTC) C1117 RPM Input Circuit Failure


• ALLISON HD Code (DTC) C1123 Vehicle Speed Sensor Input Short to Battery


• ALLISON HD Code (DTC) C1124 Input shaft speed signal missing/faulted


• ALLISON HD Code (DTC) C1132 Clutch position ckt short to ground


• ALLISON HD Code (DTC) C1133 Clutch position ckt short to battery


• ALLISON HD Code (DTC) C1134 Gear Shift position short to ground


• ALLISON HD Code (DTC) C1135 Gear Shift position short to battery


• ALLISON HD Code (DTC) C1136 Gear Select position short to ground


• ALLISON HD Code (DTC) C1137 ECU is Defective


• ALLISON HD Code (DTC) C1138 Gear Select position short to Battery


• ALLISON HD Code (DTC) C1139 Wheel Speed Sensor Center Tone Ring Missing Tooth Fault


• ALLISON HD Code (DTC) C1141 Wheel Speed Sensor LF Tone Ring Tooth Missing Fault


• ALLISON HD Code (DTC) C1142 Wheel Speed Sensor RF Tone Ring Tooth Missing Fault


• ALLISON HD Code (DTC) C1143 Wheel Speed Sensor LR Tone Ring Tooth Missing Fault


• ALLISON HD Code (DTC) C1144 Wheel Speed Sensor RR Tone Ring Tooth Missing Fault


• ALLISON HD Code (DTC) C1145 Speed Wheel Sensor RF Input Circuit Failure


• ALLISON HD Code (DTC) C1146 Speed Wheel Sensor RF Circuit Open


• ALLISON HD Code (DTC) C1148 Speed Wheel Sensor RF Coherency Fault


• ALLISON HD Code (DTC) C1149 Hydraulic Fluid Pressure/ Flow Circuit Failure


• ALLISON HD Code (DTC) C1150 Two Speed Rear Axle Input Switch Circuit Short to Vbatt


• ALLISON HD Code (DTC) C1155 Speed Wheel Sensor LF Input Circuit Failure


• ALLISON HD Code (DTC) C1156 Speed Wheel Sensor LF Circuit Open


• ALLISON HD Code (DTC) C1157 Park Brake Actuator Assembly Switch Applied Circuit Failure


• ALLISON HD Code (DTC) C1158 Speed Wheel Sensor LF Coherency Fault


• ALLISON HD Code (DTC) C1159 Hydraulic Fluid Pressure/ Flow Circuit Short to Gnd


• ALLISON HD Code (DTC) C1161 Air Pressure Low Circuit Short to Gnd


• ALLISON HD Code (DTC) C1162 Park Brake Switch # 2 Released Circuit Failure


• ALLISON HD Code (DTC) C1163 Park Brake Switch # 2 Applied Circuit Short to Gnd


• ALLISON HD Code (DTC) C1164 Park Brake Actuator Assembly Switch Circuit Failure


• ALLISON HD Code (DTC) C1165 Speed Wheel Sensor RR Input Circuit Failure


• ALLISON HD Code (DTC) C1166 Speed Wheel Sensor RR Input Open Circuit


• ALLISON HD Code (DTC) C1168 Speed Wheel Sensor RR Coherency Fault


• ALLISON HD Code (DTC) C1170 PRNDL Switch Circuit Failure


• ALLISON HD Code (DTC) C1175 Speed Wheel Sensor LR Input Circuit Failure


• ALLISON HD Code (DTC) C1176 Speed Wheel Sensor LR Circuit Open


• ALLISON HD Code (DTC) C1227 Speed Wheel Sensor LR Input Short Circuit To Battery


• ALLISON HD Code (DTC) C1228 Speed Wheel Sensor LR Input Short Circuit To Ground


• ALLISON HD Code (DTC) C1229 Speed Wheel Sensor Rear Center Coherency Fault


• ALLISON HD Code (DTC) C1230 Speed Wheel Sensor Rear Center Input Circuit Failure


• ALLISON HD Code (DTC) C1231 Speed Wheel Sensor Rear Center Circuit Open


• ALLISON HD Code (DTC) C1232 Speed Wheel Sensor Rear Center Input Short Circuit To Battery


• ALLISON HD Code (DTC) C1233 Speed Wheel LF Input Signal Missing


• ALLISON HD Code (DTC) C1234 Speed Wheel RF Input Signal Missing


• ALLISON HD Code (DTC) C1235 Speed Wheel RR Input Signal Missing


• ALLISON HD Code (DTC) C1236 Speed Wheel LR Input Signal Missing


• ALLISON HD Code (DTC) C1237 Speed Wheel Rear Input Signal Missing


• ALLISON HD Code (DTC) C1268 Motor Relay # 1 Circuit Failure


• ALLISON HD Code (DTC) C1269 Motor Relay # 1 Circuit Short to Battery


• ALLISON HD Code (DTC) C1270 Motor # 1 Input Circuit Failure


• ALLISON HD Code (DTC) C1271 Motor # 1 Input Circuit Short to Gnd


• ALLISON HD Code (DTC) C1272 Motor # 2 Input Circuit Failure


• ALLISON HD Code (DTC) C1273 Motor # 2 Input Circuit Short to Vbat


• ALLISON HD Code (DTC) C1274 Solenoid Relay # 1 Circuit Failure


• ALLISON HD Code (DTC) C1275 Solenoid Relay # 1 Circuit Short to Vbatt


• ALLISON HD Code (DTC) C1284 Oil Pressure Switch Failure


• ALLISON HD Code (DTC) C1429 Input-shaft-speed input circuit failure


• ALLISON HD Code (DTC) C1499 Transfer Case Contact Plate 'A' Encoder Circuit Failure


• ALLISON HD Code (DTC) C1500 Transfer Case Contact Plate 'B' Encoder Circuit Failure


• ALLISON HD Code (DTC) C1501 Transfer Case Contact Plate 'C' Encoder Circuit Failure


• ALLISON HD Code (DTC) C1502 Transfer Case Contact Plate 'D' Encoder Circuit Failure


• ALLISON HD Code (DTC) C1728 Transfer Case unable to transition between 2H and 4H


• ALLISON HD Code (DTC) C1729 Transfer Case unable to transition between 4H and 4L


• ALLISON HD Code (DTC) C1730 Reference Voltage Out of Range (+5 v)


• ALLISON HD Code (DTC) C1750 Accelerator Position Sensor Out of Range


• ALLISON HD Code (DTC) C1751 Vehicle Speed Sensor # 1 Output Circuit Short to Vbatt


• ALLISON HD Code (DTC) C1752 Vehicle Speed Sensor # 1 Output Circuit Short to Gnd


• ALLISON HD Code (DTC) C1753 Hydraulic Clutch Actuator Valve Signal Fault


• ALLISON HD Code (DTC) C1754 Hydraulic Clutch Actuator Valve Circuit Failure


• ALLISON HD Code (DTC) C1774 Coolant Temp Out of Range


• ALLISON HD Code (DTC) C1781 Engine Coolant Temperature Signal Missing/Fault


• ALLISON HD Code (DTC) C1838 Charging System Fault


• ALLISON HD Code (DTC) C1854 Motor Temperature Out of Range


• ALLISON HD Code (DTC) C1855 Acceleration Position Sensor Conflict


• ALLISON HD Code (DTC) C1856 Traction Motor Encoder circuit Failure


• ALLISON HD Code (DTC) C1859 PRNDL Input #2 Circuit Failure


• ALLISON HD Code (DTC) C1860 PRNDL Input #3 Circuit Failure


• ALLISON HD Code (DTC) C1861 PRNDL Input #4 Circuit Failure


• ALLISON HD Code (DTC) C1862 Contactor Circuit Failure


• ALLISON HD Code (DTC) C1863 External Charging Fault


• ALLISON HD Code (DTC) C1864 Battery Module Fault


• ALLISON HD Code (DTC) C1933 Solenoid Current Out Of Range


• ALLISON HD Code (DTC) U1000 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1001 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1002 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1003 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1004 SCP (J1850) Invalid or Missing Data for EEC Programming


• ALLISON HD Code (DTC) U1005 SCP (J1850) Invalid or Missing Data for EEC Programming


• ALLISON HD Code (DTC) U1006 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1007 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1008 SCP (J1850) Invalid or Missing Data for Engine Torque


• ALLISON HD Code (DTC) U1009 SCP (J1850) Invalid or Missing Data for Engine Torque


• ALLISON HD Code (DTC) U1010 SCP (J1850) Invalid or Missing Data for Engine Air Intake


• ALLISON HD Code (DTC) U1011 SCP (J1850) Invalid or Missing Data for Engine Air Intake


• ALLISON HD Code (DTC) U1012 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1013 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1014 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1015 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1016 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1017 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1018 SCP (J1850) Invalid or Missing Data for Throttle


• ALLISON HD Code (DTC) U1019 SCP (J1850) Invalid or Missing Data for Throttle


• ALLISON HD Code (DTC) U1020 SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch


• ALLISON HD Code (DTC) U1021 SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch


• ALLISON HD Code (DTC) U1022 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1023 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1024 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1025 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1026 SCP (J1850) Invalid or Missing Data for Engine RPM


• ALLISON HD Code (DTC) U1027 SCP (J1850) Invalid or Missing Data for Engine RPM


• ALLISON HD Code (DTC) U1028 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1029 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1030 SCP (J1850) Invalid or Missing Data for Experimental #1


• ALLISON HD Code (DTC) U1031 SCP (J1850) Invalid or Missing Data for Experimental #1


• ALLISON HD Code (DTC) U1032 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1033 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1034 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1035 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1036 SCP (J1850) Invalid or Missing Data for Wheels


• ALLISON HD Code (DTC) U1037 SCP (J1850) Invalid or Missing Data for Wheels


• ALLISON HD Code (DTC) U1038 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1039 SCP (J1850) Invalid or Missing Data for Primary Id / Vehicle Speed


• ALLISON HD Code (DTC) U1040 SCP (J1850) Invalid or Missing Data for Vehicle Speed


• ALLISON HD Code (DTC) U1041 SCP (J1850) Invalid or Missing Data for Vehicle Speed


• ALLISON HD Code (DTC) U1042 SCP (J1850) Invalid or Missing Data for Traction Control


• ALLISON HD Code (DTC) U1043 SCP (J1850) Invalid or Missing Data for Traction Control


• ALLISON HD Code (DTC) U1044 SCP (J1850) Invalid or Missing Data for Traction Motor


• ALLISON HD Code (DTC) U1045 SCP (J1850) Invalid or Missing Data for Traction Motor


• ALLISON HD Code (DTC) U1046 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1047 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1048 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1049 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1050 SCP (J1850) Invalid or Missing Data for Brakes


• ALLISON HD Code (DTC) U1051 SCP (J1850) Invalid or Missing Data for Brakes


• ALLISON HD Code (DTC) U1052 SCP (J1850) Invalid or Missing Data for Steering / Steering Wheel


• ALLISON HD Code (DTC) U1053 SCP (J1850) Invalid or Missing Data for Steering / Steering Wheel


• ALLISON HD Code (DTC) U1054 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1055 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1056 SCP (J1850) Invalid or Missing Data for Vehicle Configuration


• ALLISON HD Code (DTC) U1057 SCP (J1850) Invalid or Missing Data for Vehicle Configuration


• ALLISON HD Code (DTC) U1058 SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL


• ALLISON HD Code (DTC) U1059 SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL


• ALLISON HD Code (DTC) U1060 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1061 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1062 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1063 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1064 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1065 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1066 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1067 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1068 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1069 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1070 SCP (J1850) Invalid or Missing Data for Engine Sensors


• ALLISON HD Code (DTC) U1071 SCP (J1850) Invalid or Missing Data for Engine Sensors


• ALLISON HD Code (DTC) U1072 SCP (J1850) Invalid or Missing Data for Engine Coolant


• ALLISON HD Code (DTC) U1073 SCP (J1850) Invalid or Missing Data for Engine Coolant


• ALLISON HD Code (DTC) U1074 SCP (J1850) Invalid or Missing Data for Engine Oil


• ALLISON HD Code (DTC) U1075 SCP (J1850) Invalid or Missing Data for Engine Oil Temp


• ALLISON HD Code (DTC) U1076 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1077 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1078 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1079 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1080 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1081 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1082 SCP (J1850) Invalid or Missing Data for Engine Systems Other


• ALLISON HD Code (DTC) U1083 SCP (J1850) Invalid or Missing Data for Engine Systems Other


• ALLISON HD Code (DTC) U1084 SCP (J1850) Invalid or Missing Data for Powertrain Status Request


• ALLISON HD Code (DTC) U1085 SCP (J1850) Invalid or Missing Data for Powertrain Status Request


• ALLISON HD Code (DTC) U1086 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1087 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1088 SCP (J1850) Invalid or Missing Data for Suspension


• ALLISON HD Code (DTC) U1089 SCP (J1850) Invalid or Missing Data for Suspension


• ALLISON HD Code (DTC) U1090 SCP (J1850) Invalid or Missing Data for Non-Legislated Diagnostics


• ALLISON HD Code (DTC) U1091 SCP (J1850) Invalid or Missing Data for Non-Legislated Diagnostics


• ALLISON HD Code (DTC) U1092 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1093 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1094 SCP (J1850) Invalid or Missing Data for Experimental #2


• ALLISON HD Code (DTC) U1095 SCP (J1850) Invalid or Missing Data for Experimental #2


• ALLISON HD Code (DTC) U1096 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1097 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1098 SCP (J1850) Invalid or Missing Data for Vehicle Speed Control


• ALLISON HD Code (DTC) U1099 SCP (J1850) Invalid or Missing Data for Vehicle Speed Control


• ALLISON HD Code (DTC) U1100 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1101 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1102 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1103 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1104 SCP (J1850) Invalid or Missing Data for Chassis Status Request


• ALLISON HD Code (DTC) U1105 SCP (J1850) Invalid or Missing Data for Chassis Status Request


• ALLISON HD Code (DTC) U1106 SCP (J1850) Invalid or Missing Data for Legislated Diagnostics


• ALLISON HD Code (DTC) U1107 SCP (J1850) Invalid or Missing Data for Legislated Diagnostics


• ALLISON HD Code (DTC) U1108 SCP (J1850) Invalid or Missing Data for Electric Traction Drive (Inverter)


• ALLISON HD Code (DTC) U1109 SCP (J1850) Invalid or Missing Data for Electric Traction Drive (Inverter)


• ALLISON HD Code (DTC) U1110 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1111 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1112 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1113 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1114 SCP (J1850) Invalid or Missing Data for Charging System


• ALLISON HD Code (DTC) U1115 SCP (J1850) Invalid or Missing Data for Charging System


• ALLISON HD Code (DTC) U1116 SCP (J1850) Invalid or Missing Data for Electrical Energy Management


• ALLISON HD Code (DTC) U1117 SCP (J1850) Invalid or Missing Data for Electrical Energy Management


• ALLISON HD Code (DTC) U1118 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1119 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1120 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1121 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1122 SCP (J1850) Invalid or Missing Data for Odometer


• ALLISON HD Code (DTC) U1123 SCP (J1850) Invalid or Missing Data for Odometer


• ALLISON HD Code (DTC) U1124 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1125 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1126 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1127 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1128 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1129 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1130 SCP (J1850) Invalid or Missing Data for Fuel System


• ALLISON HD Code (DTC) U1131 SCP (J1850) Invalid or Missing Data for Fuel System


• ALLISON HD Code (DTC) U1132 SCP (J1850) Invalid or Missing Data for Vehicle Motion


• ALLISON HD Code (DTC) U1133 SCP (J1850) Invalid or Missing Data for Vehicle Motion


• ALLISON HD Code (DTC) U1134 SCP (J1850) Invalid or Missing Data for Ignition Switch / Starter


• ALLISON HD Code (DTC) U1135 SCP (J1850) Invalid or Missing Data for Ignition Switch / Starter


• ALLISON HD Code (DTC) U1136 SCP (J1850) Invalid or Missing Data for Telltales


• ALLISON HD Code (DTC) U1137 SCP (J1850) Invalid or Missing Data for Telltales


• ALLISON HD Code (DTC) U1138 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1139 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1140 SCP (J1850) Invalid or Missing Data for Gateway


• ALLISON HD Code (DTC) U1141 SCP (J1850) Invalid or Missing Data for Gateway


• ALLISON HD Code (DTC) U1142 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1143 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1144 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1145 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1146 SCP (J1850) Invalid or Missing Data for Vehicle Security


• ALLISON HD Code (DTC) U1147 SCP (J1850) Invalid or Missing Data for Vehicle Security


• ALLISON HD Code (DTC) U1148 SCP (J1850) Invalid or Missing Data for Audio Control


• ALLISON HD Code (DTC) U1149 SCP (J1850) Invalid or Missing Data for Audio Control


• ALLISON HD Code (DTC) U1150 SCP (J1850) Invalid or Missing Data for Audible Warnings


• ALLISON HD Code (DTC) U1151 SCP (J1850) Invalid or Missing Data for Audible Warnings


• ALLISON HD Code (DTC) U1152 SCP (J1850) Invalid or Missing Data for Experimental #3


• ALLISON HD Code (DTC) U1153 SCP (J1850) Invalid or Missing Data for Experimental #3


• ALLISON HD Code (DTC) U1154 SCP (J1850) Invalid or Missing Data for Compact Disc


• ALLISON HD Code (DTC) U1155 SCP (J1850) Invalid or Missing Data for Compact Disc


• ALLISON HD Code (DTC) U1156 SCP (J1850) Invalid or Missing Data for Digital Signal Processing


• ALLISON HD Code (DTC) U1157 SCP (J1850) Invalid or Missing Data for Digital Signal Processing


• ALLISON HD Code (DTC) U1158 SCP (J1850) Invalid or Missing Data for Antenna


• ALLISON HD Code (DTC) U1159 SCP (J1850) Invalid or Missing Data for Antenna


• ALLISON HD Code (DTC) U1160 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1161 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1162 SCP (J1850) Invalid or Missing Data for Digital Audio Tape


• ALLISON HD Code (DTC) U1163 SCP (J1850) Invalid or Missing Data for Digital Audio Tape


• ALLISON HD Code (DTC) U1164 SCP (J1850) Invalid or Missing Data for Tuner / Receiver


• ALLISON HD Code (DTC) U1165 SCP (J1850) Invalid or Missing Data for Tuner / Receiver


• ALLISON HD Code (DTC) U1166 SCP (J1850) Invalid or Missing Data for Cassette Tape


• ALLISON HD Code (DTC) U1167 SCP (J1850) Invalid or Missing Data for Cassette Tape


• ALLISON HD Code (DTC) U1168 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1169 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1170 SCP (J1850) Invalid or Missing Data for Cellular Phone / Paging System


• ALLISON HD Code (DTC) U1171 SCP (J1850) Invalid or Missing Data for Cellular Phone / Paging System


• ALLISON HD Code (DTC) U1172 SCP (J1850) Invalid or Missing Data for Remote Button Control


• ALLISON HD Code (DTC) U1173 SCP (J1850) Invalid or Missing Data for Remote Button Control


• ALLISON HD Code (DTC) U1174 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1175 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1176 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1177 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1178 SCP (J1850) Invalid or Missing Data for Climate Control (HVAC)


• ALLISON HD Code (DTC) U1179 SCP (J1850) Invalid or Missing Data for Climate Control (HVAC)


• ALLISON HD Code (DTC) U1180 SCP (J1850) Invalid or Missing Data for Personalization (Memory) Features


• ALLISON HD Code (DTC) U1181 SCP (J1850) Invalid or Missing Data for Personalization (Memory) Features


• ALLISON HD Code (DTC) U1182 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1183 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1184 SCP (J1850) Invalid or Missing Data for Window Wiper / Washer


• ALLISON HD Code (DTC) U1185 SCP (J1850) Invalid or Missing Data for Window Wiper / Washer


• ALLISON HD Code (DTC) U1186 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1187 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1188 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1189 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1190 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1191 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1192 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1193 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1194 SCP (J1850) Invalid or Missing Data for Mirrors


• ALLISON HD Code (DTC) U1195 SCP (J1850) Invalid or Missing Data for Mirrors


• ALLISON HD Code (DTC) U1196 SCP (J1850) Invalid or Missing Data for Door Locks


• ALLISON HD Code (DTC) U1197 SCP (J1850) Invalid or Missing Data for Door Locks


• ALLISON HD Code (DTC) U1198 SCP (J1850) Invalid or Missing Data for External Access (Doors)


• ALLISON HD Code (DTC) U1199 SCP (J1850) Invalid or Missing Data for External Access (Doors)


• ALLISON HD Code (DTC) U1200 SCP (J1850) Invalid or Missing Data for Seat Motion / Control


• ALLISON HD Code (DTC) U1201 SCP (J1850) Invalid or Missing Data for Seat Motion / Control


• ALLISON HD Code (DTC) U1202 SCP (J1850) Invalid or Missing Data for Windows


• ALLISON HD Code (DTC) U1203 SCP (J1850) Invalid or Missing Data for Windows


• ALLISON HD Code (DTC) U1204 SCP (J1850) Invalid or Missing Data for Steering Column


• ALLISON HD Code (DTC) U1205 SCP (J1850) Invalid or Missing Data for Steering Column


• ALLISON HD Code (DTC) U1206 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1207 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1208 SCP (J1850) Invalid or Missing Data for Seat Switches


• ALLISON HD Code (DTC) U1209 SCP (J1850) Invalid or Missing Data for Seat Switches


• ALLISON HD Code (DTC) U1210 SCP (J1850) Invalid or Missing Data for Restraints


• ALLISON HD Code (DTC) U1211 SCP (J1850) Invalid or Missing Data for Restraints


• ALLISON HD Code (DTC) U1212 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1213 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1214 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1215 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1216 SCP (J1850) Invalid or Missing Data for External Lamp Outage


• ALLISON HD Code (DTC) U1217 SCP (J1850) Invalid or Missing Data for External Lamp Outage


• ALLISON HD Code (DTC) U1218 SCP (J1850) Invalid or Missing Data for External Lamps


• ALLISON HD Code (DTC) U1219 SCP (J1850) Invalid or Missing Data for External Lamps


• ALLISON HD Code (DTC) U1220 SCP (J1850) Invalid or Missing Data for Interior Lamp Outage


• ALLISON HD Code (DTC) U1221 SCP (J1850) Invalid or Missing Data for Interior Lamp Outage


• ALLISON HD Code (DTC) U1222 SCP (J1850) Invalid or Missing Data for Interior Lamps


• ALLISON HD Code (DTC) U1223 SCP (J1850) Invalid or Missing Data for Interior Lamps


• ALLISON HD Code (DTC) U1224 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1225 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1226 SCP (J1850) Invalid or Missing Data for Body Status Request


• ALLISON HD Code (DTC) U1227 SCP (J1850) Invalid or Missing Data for Body Status Request


• ALLISON HD Code (DTC) U1228 SCP (J1850) Invalid or Missing Data for Tires


• ALLISON HD Code (DTC) U1229 SCP (J1850) Invalid or Missing Data for Tires


• ALLISON HD Code (DTC) U1230 SCP (J1850) Invalid or Missing Data for Electric Defrost


• ALLISON HD Code (DTC) U1231 SCP (J1850) Invalid or Missing Data for Electric Defrost


• ALLISON HD Code (DTC) U1232 SCP (J1850) Invalid or Missing Data for Navigation


• ALLISON HD Code (DTC) U1233 SCP (J1850) Invalid or Missing Data for Navigation


• ALLISON HD Code (DTC) U1234 SCP (J1850) Invalid or Missing Data for Displays


• ALLISON HD Code (DTC) U1235 SCP (J1850) Invalid or Missing Data for Displays


• ALLISON HD Code (DTC) U1236 SCP (J1850) Invalid or Missing Data for Memory Storage


• ALLISON HD Code (DTC) U1237 SCP (J1850) Invalid or Missing Data for Memory Storage


• ALLISON HD Code (DTC) U1238 SCP (J1850) Invalid or Missing Data for Experimental #4


• ALLISON HD Code (DTC) U1239 SCP (J1850) Invalid or Missing Data for Experimental #4


• ALLISON HD Code (DTC) U1240 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1241 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1242 SCP (J1850) Invalid or Missing Data for Exterior Environment


• ALLISON HD Code (DTC) U1243 SCP (J1850) Invalid or Missing Data for Exterior Environment


• ALLISON HD Code (DTC) U1244 SCP (J1850) Invalid or Missing Data for Interior Environment


• ALLISON HD Code (DTC) U1245 SCP (J1850) Invalid or Missing Data for Interior Environment


• ALLISON HD Code (DTC) U1246 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1247 SCP (J1850) Invalid or Missing Data for Primary Id


• ALLISON HD Code (DTC) U1248 SCP (J1850) Invalid or Missing Data for Time / Date


• ALLISON HD Code (DTC) U1249 SCP (J1850) Invalid or Missing Data for Time / Date


• ALLISON HD Code (DTC) U1250 SCP (J1850) Invalid or Missing Data for Vehicle Id (VIN)


• ALLISON HD Code (DTC) U1251 SCP (J1850) Invalid or Missing Data for Vehicle Id (VIN)


• ALLISON HD Code (DTC) U1252 SCP (J1850) Invalid or Missing Data for Class A Functions


• ALLISON HD Code (DTC) U1253 SCP (J1850) Invalid or Missing Data for Class A Functions


• ALLISON HD Code (DTC) U1254 SCP (J1850) Invalid or Missing Data for Network Control


• ALLISON HD Code (DTC) U1255 SCP (J1850) Invalid or Missing Data for Network Control


• ALLISON HD Code (DTC) U1260 SCP (J1850) Single Ended (+) Circuit Failure


• ALLISON HD Code (DTC) U1261 SCP (J1850) Single Ended (-) Circuit Failure


• ALLISON HD Code (DTC) U1262 SCP (J1850) Communication Bus Fault


• ALLISON HD Code (DTC) U1308 SCP (J1850) Invalid or Missing Data for Function Read Engine Torque


• ALLISON HD Code (DTC) U1341 SCP (J1850) Invalid or Missing Data for Function Read Vehicle Speed


• ALLISON HD Code (DTC) U1430 SCP (J1850) Invalid or Missing Data for Function Read Fuel System


• ALLISON HD Code (DTC) U1451 SCP (J1850) Invalid or Missing Data for Function Read Audible Warnings / Anti-Theft Module, Vehicle Immobilized


• ALLISON HD Code (DTC) U1612 SCP (J1850) Lack of Acknowledgment for Primary Id


• ALLISON HD Code (DTC) U1736 SCP (J1850) Lack of Acknowledgment for Telltales


• ALLISON HD Code (DTC) U1750 SCP (J1850) Lack of Acknowledgment for Audible Warnings


• ALLISON HD Code (DTC) U1794 SCP (J1850) Lack of Acknowledgment for Mirrors


• ALLISON HD Code (DTC) U1797 SCP (J1850) Lack of Acknowledgment for Door Locks


• ALLISON HD Code (DTC) U1798 SCP (J1850) Lack of Acknowledgment for External Access (Doors)


• ALLISON HD Code (DTC) U1806 SCP (J1850) Lack of Acknowledgment for Primary Id


• ALLISON HD Code (DTC) U1900 CAN Communication Bus Fault


• ALLISON HD Code (DTC) U1950 UPB Communication Bus Fault


• ALLISON HD Code (DTC) U2000 Audio Rear Control Unit is Not Responding


• ALLISON HD Code (DTC) U2001 Audio Tape Deck Unit is Not Responding


• ALLISON HD Code (DTC) U2002 Audio Bezel is Not Responding


• ALLISON HD Code (DTC) U2003 Audio Compact Disk / Disk Jockey Unit is Not Responding


• ALLISON HD Code (DTC) U2004 Audio Steering Wheel Control Unit is Not Responding


• ALLISON HD Code (DTC) U2005 Audio Rear Integrated Control Panel Unit is Not Responding


• ALLISON HD Code (DTC) U2006 Audio Remote Climate Control Unit is Not Responding


• ALLISON HD Code (DTC) U2007 Audio Navigation Unit is Not Responding


• ALLISON HD Code (DTC) U2008 Audio Phone is Not Responding


• ALLISON HD Code (DTC) U2009 Audio Front Control Module (ACM) is Not Responding


• ALLISON HD Code (DTC) U2010 Module is Not Responding (Non SCP)


• ALLISON HD Code (DTC) U2011 Module Transmitted Invalid Data (Non SCP)


• ALLISON HD Code (DTC) U2012 Communication Bus Error (Non SCP)


• ALLISON HD Code (DTC) U2013 Compass Module is not Responding


• ALLISON HD Code (DTC) U2014 Audio Subwoofer Unit is Not Responding


• ALLISON HD Code (DTC) U2015 Signal Link Fault (Non SCP)


• ALLISON HD Code (DTC) U2016 Signal Link Short to Ground (Non SCP) / From NGV Module


• ALLISON HD Code (DTC) U2017 Driver Side Crash Sensor Communication Fault (Non SCP)


• ALLISON HD Code (DTC) U2018 Passenger Side Crash Sensor Communication Fault (Non SCP)


• ALLISON HD Code (DTC) U2019 Audio Voice Module Not Responding


• ALLISON HD Code (DTC) U2020 Audio Center Amp is not responding


• ALLISON HD Code (DTC) U2021 Invalid /fault data received (Non SCP)


• ALLISON HD Code (DTC) U2150 SCP (J1850) Invalid Data from REM


• ALLISON HD Code (DTC) U2152 SCP (J1850) Invalid Data from GEM


• ALLISON HD Code (DTC) U2160 SCP (J1850) Invalid Data from IC


• ALLISON HD Code (DTC) U2195 SCP (J1850) Invalid Data from SCLM


• ALLISON HD Code (DTC) U2500 (CAN) Lack of Acknowledgement From Engine Management