October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
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. |
| 34 |
MAP sensor voltage too low. |
| 34 |
MAF sensor frequency low (Fuel Injection). |
| 35 |
ISC switch circuit shorted. |
| 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. |