Trouble Code Id Chart
ECM TROUBLE CODE IDENTIFICATION
| Code | Circuit Affected |
|---|---|
| 13 | Open Oxygen Sensor Circuit |
| 14 | Coolant sensor circuit shorted/low voltage |
| 15 | Coolant sensor circuit open/high voltage |
| 21 | Throttle position sensor circuit open/low voltage |
| 22 | Throttle position sensor circuit open/high voltage |
| 24 | Vehicle speed sensor circuit |
| 33 | MAP sensor circuit voltage high |
| 34 | MAP-vacuum sensor circuit voltage low |
| 42 | EST by-pass circuit grounded/open |
| 43 | ESC retard signal too long |
| 44 | Lean oxygen sensor indication |
| 44 & 45 | At the same time, faulty oxygen sensor |
| 45 | Rich oxygen sensor indication |
| 51 | Faulty PROM or improper PROM installation |