ECM Trouble Code Id
WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 1984 Pontiac Phoenix, 1984 Pontiac Parisienne, 1984 Pontiac Grand Prix, 1984 Pontiac Firebird, and 1984 Pontiac Bonneville. However, it is still accessible from the selected car via links, so may be relevant.
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 Signal Low. | ||
| 24 | VSS circuit. | ||
| 24B | Park/Neutral Switch. | ||
| 25 | MAT sensor high. | ||
| 32 | BARO Sensor Voltage Low. | ||
| 33 | MAP sensor voltage too high. | ||
| 34 | MAP sensor voltage too low. | ||
| 41 | No distributor reference circuit. | ||
| 42 | EST circuit. C(3)I ignition | ||
| 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. | ||
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