Trouble Code Definition
ECM/PCM TROUBLE CODE DEFINITION
| Code No. |
Circuit Affected |
| 12 |
No RPM Reference Pulse |
| 13 |
O2 Sensor Circuit Open; Left O2 Sensor Circuit Open (Dual-Sensor Models) |
| 14 |
Coolant Temperature Sensor Signal Voltage Low |
| 15 |
Coolant Temperature Sensor Signal Voltage High |
| 16 |
System Voltage Low (3.1L Calif. "W" Body) |
| 17 |
Camshaft Sensor (3.1L "W" Body) |
| 21 |
TPS Signal Voltage High |
| 22 |
TPS Signal Voltage Low |
| 23 |
MAT Sensor Signal Voltage High |
| 24 |
Vehicle Speed Sensor |
| 25 |
MAT Sensor Signal Voltage Low |
| 32 |
EGR System Error |
| 33 |
MAP Sensor Signal Voltage High |
| 34 |
MAP Sensor Signal Voltage Low |
| 35 |
IAC Idle Speed Error |
| 36 |
24X Signal Error (3.1L Calif. "W" Body) |
| 41 |
Cylinder Select Error (3.1L) |
| 42 |
EST Circuit Open Or Grounded |
| 43 |
ESC Error |
| 44 |
Lean Exhaust Indication; Left Lean Exhaust Indication (Dual-Sensor Models) |
| 45 |
Rich Exhaust Indication; Left Rich Exhaust Indication (Dual-Sensor Models) |
| 51 |
Faulty PROM, MEM-CAL Or ECM/PCM |
| 52 |
Faulty/Missing CAL-PAC Or MEM-CAL |
| 53 |
System Overvoltage |
| 55 |
ECM/PCM Error |
| 61 |
Degraded O2 Sensor |
| 62 |
Gear Switch Error (3.1L) |
| 63 |
Right Oxygen Sensor Circuit Open (Dual-Sensor Models) |
| 64 |
Right Oxygen Sensor Lean (Dual-Sensor Models) |
| 65 |
Right Oxygen Sensor Rich (Dual-Sensor Models) |
| 66 |
A/C Pressure Sensor (
3.1L) Low A/C Charge (3.1L Calif. "W" Body, |
| 75, 76 Or 77 |
EGR Solenoid Error (3.1L Calif. "W" Body) |
| 79 |
VSS Signal Voltage High (3.1L Calif. "W" Body) |
| 80 |
VSS Signal Voltage Low (3.1L Calif. "W" Body) |
| 81 |
Brake Switch Error (3.1L Calif. "W" Body) |
| 82 |
3X Signal Error (3.1L Calif. "W" Body) |
| 85 |
PROM Error |
| 87 |
EEPROM Error |
NOTE:
Use trouble code charts only if SERVICE ENGINE SOON light is illuminated (indicating a current problem exists). Exceptions are Code 13, 15, 24, 44 and 45 charts, which may be used to help diagnose intermittent codes. Anytime control module-related Codes 51, 52 or 55 are displayed with another code, start with 50-series code, and then proceed to lower numbered codes.