Trouble Code Definitions
NOTE:
Only transmission-related trouble codes are listed. For engine-related DTCs, see appropriate TESTS W/CODES
article in ENGINE PERFORMANCE section. Engine-related DTCs must be repaired first, as engine performance and related component signals will affect transmission operation and diagnosis.
PCM TROUBLE CODE DEFINITIONS (CARS)
| Code No. |
Circuit Affected |
| 12 |
No RPM Reference Pulse |
| 14 |
Coolant Temp. Sensor Signal Voltage Low |
| 15 |
Coolant Temp. Sensor Signal Voltage High |
| 21 |
Throttle Position Sensor Signal Voltage High |
| 22 |
Throttle Position Sensor Signal Voltage Low |
| 24 |
Vehicle Speed Sensor |
| 28 |
Trans. Range Pressure Switch |
| 37 |
TCC Brake Switch Error |
| 38 |
Brake Switch Error |
| 53 |
System Voltage High |
| 58 |
Trans. Temp. Sensor High Temperature |
| 59 |
Trans. Temp. Sensor Low Temperature |
| 72 |
Vehicle Speed Sensor Loss |
| 73 |
Pressure Control Solenoid |
| 74 |
Traction Control Voltage Low |
| 75 |
Transmission Voltage Low |
| 79 |
Transmission Fluid Overtemp |
| 80 |
Transmission Component Slipping |
| 81 |
2-3 Shift Solenoid Circuit Fault |
| 82 |
1-2 Shift Solenoid Circuit Fault |
| 83 |
TCC PWM Solenoid |
| 84 |
3-2 Control Solenoid |
| 85 |
TCC Stuck On |
| 90 |
TCC Solenoid Circuit |
| 93 |
Pressure Control Solenoid |
| 96 |
Transmission Voltage Low |
PCM TROUBLE CODE DEFINITIONS (LIGHT TRUCKS & VANS - GASOLINE EXCEPT "S" & "T" 4.3L VIN W)
| Code No. |
Circuit Affected |
| 12 |
No RPM Reference Pulse |
| 14 |
Coolant Temp. Sensor Signal Voltage Low |
| 15 |
Coolant Temp. Sensor Signal Voltage High |
| 21 |
Throttle Position Sensor Voltage High |
| 22 |
Throttle Position Sensor Voltage Low |
| 24 |
Vehicle Speed Sensor Trans. Output Signal |
| 28 |
Trans. Range Pressure Switch |
| 37/38 |
TCC Brake Switch On/Off |
| 52/53 |
System Voltage High |
| 58 |
Trans. Fluid Temp. High |
| 59 |
Trans. Fluid Temp. Low |
| 66 |
3-2 Control Solenoid Circuit Fault |
| 67 |
TCC Solenoid Circuit Check |
| 69 |
Torque Converter Clutch Stuck On |
| 72 |
VSS Circuit Loss Transmission Output Signal |
| 73 |
Pressure Control Solenoid |
| 75 |
System Voltage Low |
| 79 |
Trans. Fluid Temperature High |
| 81 |
Trans. 2-3 Solenoid Circuit Fault |
| 82 |
Trans. 1-2 Solenoid Circuit Fault |
| 83 |
TCC Solenoid Circuit Fault |
PCM TROUBLE CODE DEFINITIONS (LIGHT TRUCKS & VANS - DIESEL)
| Code No. |
Circuit Affected |
| 14 |
Coolant Temp. Sensor Circuit Low |
| 15 |
Coolant Temp. Sensor Circuit High |
| 24 |
Vehicle Speed Sensor Circuit Low |
| 28 |
Trans. Range Pressure Switch |
| 37/38 |
TCC Brake Switch Stuck On/Off |
| 52/53 |
System Voltage High Long |
| 58 |
Trans. Fluid Temp. Sensor Circuit Low |
| 59 |
Trans. Fluid Temp. Sensor Circuit High |
| 66 |
3-2 Control Solenoid Circuit Fault |
| 67 |
TCC Solenoid Circuit Fault |
| 69 |
TCC Stuck On |
| 72 |
VSS Circuit Loss |
| 73 |
Pressure Control Solenoid Circuit |
| 75 |
System Voltage Low |
| 79 |
Transmission Fluid Overtemp |
| 81 |
2-3 Shift Solenoid Circuit Fault |
| 82 |
1-2 Shift Solenoid Circuit Fault |
| 83 |
TCC PWM Solenoid Circuit Fault |
PCM TROUBLE CODE DEFINITIONS ("S" & "T" SERIES 4.3L VIN W)
| Code No. |
Circuit Affected |
| P0117 |
Coolant Temp. Sensor Temp. Low |
| P0118 |
Coolant Temp. Sensor Temp. High |
| P0122 |
Throttle Position Sensor Signal Low |
| P0123 |
Throttle Position Sensor Signal High |
| P0502/P0503 |
Vehicle Speed Sensor Circuit Low/High |
| P0560 |
System Voltage Malfunction |
| P0703 |
TCC Brake Input Circuit |
| P0712 |
Trans. Temp. Sensor Signal Voltage Low |
| P0713 |
Trans. Temp. Sensor Signal Voltage High |
| P0742 |
TCC Stuck On |
| P0748 |
Pressure Control Solenoid |
| P0753 |
1-2 Shift Solenoid |
| P0756 |
2-3 Shift Solenoid Performance |
| P0758 |
2-3 Shift Solenoid Electrical |
| P1810 |
Trans. Range Switch Assembly Circuit |
| P1812 |
Trans. Fluid Overtemp |
| P1860 |
TCC PWM Solenoid Electrical Circuit |
| P1864 |
TCC Solenoid Electrical Circuit |
| P1870 |
Transmission Component Slipping |
| P1886 |
3-2 Solenoid Electrical Circuit |