Allison 1000, 2000 Fault Codes DTC

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FAULT CODES

1000 TRANSMISSIONS

2000 TRANSMISSIONS

ALLISON 1000/2000/24000 SERIES ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL

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DIAGNOSTIC TROUBLE COPDES (DTC)

5-5. DIAGNOSTIC TROUBLE CODES (DTCs)

DTC LIST AND DESCRIPTIONS INDEX

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DTC Description

P0121 Pedal Postion Sensor Performance Problem No 5-15
P0122 Pedal Postion Sensor Circuit Low Voltage No 5-16
P0123 Pedal Postion Sensor Circuit High Voltage No 5-19
P0218 Transmission Fluid Over Temperature No 5-22
P0562 System Voltage Low Yes 5-26
P0563 System Voltage High Yes 5-29
P0602 TCM Not Programmed Yes 5-33
P0606 Controller Internal Performance Yes 5-34
P0701 Transmission Control System Performance No 5-35
P0703 Brake Switch Circuit No 5-37
P0705 Transmission Range Sensor Circuit (PRNDL Input) No 5-41
P0706 Transmission Range Sensor Circuit Performance Yes 5-45
P0708 Transmission Range Sensor Circuit High Input Yes 5-49
P0710 Transmission Fluid Temperature Sensor Malfunction No 5-53
P0711 Transmission Fluid Temperature Sensor Circuit Performance Yes 5-57
P0712 Transmission Fluid Temperature Sensor Circuit Low Input (High Temperature) Yes 5-61
P0713 Transmission Fluid Temperature Sensor Circuit Low Input (Low Temperature) Yes 5-65
P0716 Turbine Speed Sensor Circuit Performance Yes 5-69
P0717 Turbine Speed Sensor Circuit No Signal Yes 5-73
P0721 Output Speed Sensor Circuit Performance Yes 5-77
P0722 Output Speed Sensor Circuit No Signal Yes 5-81
P0726 Engine Speed Input Circuit Performance Yes 5-85
P0727 Engine Speed Sensor Circuit No Signal Yes 5-89
P0731 Incorrect 1st Gear Ratio Yes 5-93
P0732 Incorrect 2nd Gear Ratio Yes 5-97
P0733 Incorrect 3rd Gear Ratio Yes 5-101
P0734 Incorrect 4th Gear Ratio Yes 5-105
P0735 Incorrect 5th Gear Ratio Yes 5-109
P0736 Incorrect Reverse Ratio Yes 5-113
P0741 Torque Converter Clutch System Stuck Off Yes 5-117
P0742 Torque Converter Clutch System Stuck On Yes 5-120
P0748 Pressure Control Solenoid A Electrical Yes 5-123
P0763 Shift Solenoid C Electrical Yes 5-127
P0768 Shift Solenoid D Electrical Yes 5-131
P0773 Shift Solenoid E Electrical Yes 5-135
P0778 Pressure Control Solenoid B Electrical Yes 5-139
P0840 Transmission Pressure Switch Solenoid C Circuit Yes 5-143
P0841 Transmission Pressure Switch Solenoid C Circuit Stuck Open Yes 5-147

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