Trouble Code Component Identification
ECM TROUBLE CODE IDENTIFICATION
| Code |
Circuit Affected |
| 12 |
|
| 13 |
Open oxygen sensor circuit. |
| 14 |
Coolant sensor circuit shorted. |
| 15 |
Coolant sensor circuit open. |
| 21 |
TPS signal voltage high. |
| 22 |
TPS signal voltage low. |
| 23 |
M/C solenoid circuit open or grounded. |
| 24 |
VSS circuit. |
| 24B |
Park/Neutral Switch. |
| 25 |
MAT sensor signal voltage low. |
| 31 |
Wastegate solenoid. |
| 32 |
BARO sensor circuit. |
| 33 |
MAF sensor Frequency high. |
| 34 |
MAF sensor Frequency low. |
| 35 |
ISC switch circuit shorted. |
| 41 |
No distributor reference circuit. |
| 42 |
EST circuit. |
| 43 |
ESC retard signal too low. |
| 44 |
Lean oxygen sensor value. |
| 45 |
Rich oxygen sensor value. |
| 51 |
Faulty PROM, PROM installation or ECM. |
| 52 |
Faulty CALPAC. |
| 53 |
EGR vacuum control (carb. models). |
| 54 |
M/C solenoid high (carb. models). |
| 55 |
Faulty ECM. |