Fault code list for Allison 1000/2000/24000 Series
Allison 1000/2000/24000 Series Electronic Controls Troubleshooting Manual
DTC/Description
P0121 Pedal Postion Sensor Performance Problem
P0122 Pedal Postion Sensor Circuit Low Voltage
P0123 Pedal Postion Sensor Circuit High Voltage
P0218 Transmission Fluid Over Temperature
P0562 System Voltage Low
P0563 System Voltage High
P0602 TCM Not Programmed
P0606 Controller Internal Performance
P0701 Transmission Control System Performance
P0703 Brake Switch Circuit
P0705 Transmission Range Sensor Circuit (PRNDL Input)
P0706 Transmission Range Sensor Circuit Performance
P0708 Transmission Range Sensor Circuit High Input
P0710 Transmission Fluid Temperature Sensor Malfunction
P0711 Transmission Fluid Temperature Sensor Circuit Performance
P0712 Transmission Fluid Temperature Sensor Circuit Low Input (High Temperature)
P0713 Transmission Fluid Temperature Sensor Circuit Low Input (Low Temperature)
P0716 Turbine Speed Sensor Circuit Performance
P0717 Turbine Speed Sensor Circuit No Signal
P0721 Output Speed Sensor Circuit Performance
P0722 Output Speed Sensor Circuit No Signal
P0726 Engine Speed Input Circuit Performance
P0727 Engine Speed Sensor Circuit No Signal
P0731 Incorrect 1st Gear Ratio
P0732 Incorrect 2nd Gear Ratio
P0733 Incorrect 3rd Gear Ratio
P0735 Incorrect 5th Gear Ratio
P0736 Incorrect Reverse Ratio
P0741 Torque Converter Clutch System Stuck Off
P0742 Torque Converter Clutch System Stuck On
P0748 Pressure Control Solenoid A Electrical
P0763 Shift Solenoid C Electrical
P0768 Shift Solenoid D Electrical
P0773 Shift Solenoid E Electrical
P0778 Pressure Control Solenoid B Electrical
P0840 Transmission Pressure Switch Solenoid C Circuit
P0841 Transmission Pressure Switch Solenoid C Circuit Stuck Open
P0843 Transmission Pressure Switch Solenoid C Circuit High
P0845 Transmission Pressure Switch Solenoid D Circuit
P0846 Transmission Pressure Switch Solenoid D Circuit
P0847 Transmission Pressure Swtich Solenoid D Circuit
P0848 Transmission Pressure Switch Solenoid D Circuit
P1688 Unmanaged Engine Torque Delivered to TCM
P1709 Transmission Pressure Switch Solenoid E Circuit
P1710 Transmission Pressure Switch Solenoid E Circuit Stuck Open
P1711 Transmission Pressure Switch Solenoid E Circuit Stuck Closed
P1712 Transmission Pressure Switch Solenoid E Circuit High
P1713 Transmission Pressure Switch Reverse Circuit
P1714 Transmission Pressure Switch Reverse Circuit Stuck On
P1716 Transmission Pressure Switch Reverse Circuit High
P1718 Incorrect Neutral Gear Ration
P1720 Solenoid A Controlled Clutch Not Engaged
P1721 Solenoid B Controlled Clutch Not Engaged
P1723 Solenoid A Controlled Clutch Engaged
P1724 Solenoid B Controlled Clutch Engaged
P1726 Shift Solenoid D Controlled Clutch Engaged
P1727 Shift Controlled E Clutch Engaged
P1779 Engine Torque Delivered To ECM
P1835 Kickdown Circuit Yes 5-238
P1860 Torque Converter Clutch PWM Solenoid Circuit –Electrical
P1875 4WD Low Switch Circuit
P1891 Throttle Postion Sensor Pulse Width Modulation (PWM) Signal Low Input
P1892 Throttle Postion Sensor Pulse Width Modulation (PWM) Signal High Input
U1000 Serial Data Communication Link Malfunction (Class2)
U1016 Class 2 Powertrain Controller State of Health Failure
U1041 Class 2 ABS Controller State of Health Failure
U1064 Class 2 TBC Controller State of Health Failure
U1096 Class 2 IPC Controller State of Health Failure
U1300 Serial Data Communication Link Low (Class2)
U1301 Serial Data Communication Link High (Class2)
U2104 Can Bus Rest Counter Overrun
U2105 Can Bus Error ECM