Trouble Code Identification
TROUBLE CODE IDENTIFICATION
| Code |
System Affected |
Probable Cause |
| 12 |
System Normal |
System Normal |
| 13 (SOHC) |
O2 Sensor (Open/Shorted) |
Sensor or Circuit, ECM |
| 13 (DOHC) |
O2 Sensor (Open/Shorted) |
Sensor or Circuit, ECM |
| 14A |
Coolant Temp. Sensor |
Sensor or Circuit, ECM |
| 14B |
Coolant Temp. Sensor |
Sensor or Circuit, ECM |
| 21A |
TPS Signal (High) |
Sensor or Circuit, ECM |
| 21B |
TPS Signal (Low) |
Sensor or Circuit, ECM |
| 23A |
MAT Sensor (Low) |
Sensor or Circuit, ECM |
| 23B |
MAT Sensor (High) |
Sensor or Circuit, ECM |
| 24 |
Vehicle Speed Sensor |
Sensor or Circuit, ECM |
| 32 |
EGR Control Solenoid |
EGR Valve, Sensor or Ckt, ECM |
| 33A |
MAP Sensor (High) |
Sensor or Circuit, ECM |
| 33B |
MAP Sensor (Low) |
Sensor or Circuit, ECM |
| 42 |
Elec. Spark Timing |
Circuit, Ign. Module, ECM |
| 44 (SOHC) |
O2 Sensor (Lean) |
Injectors, Fuel Pressure, Exhaust Leaks, O2 Sensor or Circuit, ECM |
| 44 (DOHC) |
O2 Sensor (Lean) |
Injectors, Fuel Pressure, Exhaust Leaks, O2 Sensor or Circuit, ECM |
| 45 (SOHC) |
O2 Sensor (Rich) |
Injectors, Fuel Pressure, EGR, O2 Sensor or Circuit, MAP Sensor, TPS, Canister Purge Ignition Shielding, ECM |
| 45 (DOHC) |
O2 Sensor (Rich) |
Injectors, Fuel Pressure, EGR, O2 Sensor or Circuit, MAP Sensor, TPS, Canister Purge Ignition Shielding, ECM |
| 51 |
ECM/MEM-CAL Failure |
ECM, EEPROM or MEM-CAL Failure |