Trouble Code Definition
TROUBLE CODE IDENTIFICATION
| Code |
System Affected |
Probable Cause |
| 12 |
System Normal |
System Normal |
| 13 |
O2 Sensor |
Sensor or Circuit ECM |
| 14A |
Coolant Temperature Sensor |
Sensor or Circuit, ECM |
| 14B |
Coolant Temperature Sensor |
Sensor or Circuit, ECM |
| 21A |
TPS Signal (High) |
TPS, ECM |
| 21B |
TPS Signal (Low) |
TPS, ECM |
| 23A |
MAT Circuit (Low) |
Sensor or Circuit, ECM |
| 23B |
MAT Circuit (High) |
Sensor or Circuit, ECM |
| 24 |
Vehicle Speed Sensor |
Sensor or Circuit, ECM |
| 32 |
EGR System |
EGR Valve, Wiring Circuit EGR Solenoid, EGR Filter, EVRV, ECM |
| 33A |
MAP Sensor Signal (High) |
Sensor or Circuit, ECM |
| 33B |
MAP Sensor Signal (Low) |
Sensor or Circuit, ECM |
| 42 |
Electronic Spark Timing |
Wiring Circuit, Ignition Module, ECM |
| 44 |
O2 Sensor (Lean) |
Injectors, Fuel Pressure,Exhaust Leaks, O2 Sensor or Circuit, MAP Sensor or ECM |
| 45 |
O2 Sensor (Rich) |
Injectors, Fuel Pressure,O2 Sensor or Circuit, MAP Sensor, TPS, Canister Purge Ignition Shielding, ECM |
| 51 |
PROM Error |
PROM or ECM |