ECM Trouble Code Id
ECM TROUBLE CODE IDENTIFICATION
| Code | Circuit Affected | ||
|---|---|---|---|
| 12 (1) | No distributor reference to ECM | ||
| 13 | Open oxygen sensor circuit. | ||
| 14 | Coolant sensor circuit signal voltage low. | ||
| 15 | Coolant sensor circuit signal voltage high. | ||
| 21 | TPS signal voltage high. | ||
| 22 | TPS signal voltage low. | ||
| 23 | M/C Solenoid Circuit Low. | ||
| 24 | VSS circuit. | ||
| 24B | Park/Neutral Switch. | ||
| 25 | MAT sensor high. | ||
| 31 | Wastegate solenoid. | ||
| 32 | BARO sensor circuit. | ||
| 33 | MAP sensor voltage too high. | ||
| 34 | MAP sensor voltage too low. | ||
| 41 | No distributor reference 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 | ||
| 55 | Faulty ECM. | ||
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NOTE:
On TBI models only, "CHECK ENGINE" light will indicate operational mode of engine. In closed loop, the "CHECK ENGINE" light will flash at a rate of 1 flash per second. In open loop, the "CHECK ENGINE" light will flash at a rate of 2.5 flashes per second.