Trouble Code & Component Identification
PROGRAMMED ECM TROUBLE CODES
| Code | Circuit Affected |
|---|---|
| 12 | No tach signal |
| 13 | Oxygen sensor not ready |
| 14 | Shorted coolant sensor circuit |
| 15 | Open coolant sensor circuit |
| 16 | Generator voltage out of range |
| 18 | Open crank signal circuit |
| 19 | Shorted fuel pump circuit |
| 20 | Open fuel pump circuit |
| 21 | Shorted TPS circuit |
| 22 | Open TPS circuit |
| 23 | EST/Bypass circuit problem |
| 24 | Speed sensor circuit |
| 26 | Shorted throttle switch circuit |
| 27 | Open throttle switch circuit |
| 28 | Open 4th gear circuit |
| 29 | Shorted 4th gear circuit |
| 30 | ISC circuit |
| 31 | Shorted MAP sensor circuit |
| 32 | Open MAP sensor circuit |
| 33 | MAP/BARO sensor correlation |
| 34 | MAP signal too high |
| 35 | Shorted BARO sensor circuit |
| 36 | Open BARO sensor circuit |
| 37 | Shorted MAT sensor circuit |
| 38 | Open MAT sensor circuit |
| 39 | TCC engagement |
| 44 | Lean exhaust signal |
| 45 | Rich exhaust signal |
| 51 | PROM error |
| 52 | ECM memory reset indicator |
| 53 | Distributor signal interrupt |
| 60 | Transmission not in "DRIVE" |
| 63 | Car speed exceeds maximum limit |
| 64 | Car exceeds maximum acceleration limit |
| 65 | Coolant temperature exceeds maximum limit |
| 66 | Engine RPM exceeds maximum limit |
| 67 | Shorted "SET" or "RESUME" circuit |
| .7.0 | System ready for further tests |
| .7.1 | Cruise control brake circuit test |
| .7.2 | Throttle switch circuit test |
| .7.3 | Drive ADL circuit test |
| .7.4 | Reverse circuit test |
| .7.5 | Cruise on/off circuit test |
| .7.6 | Set/coast circuit test |
| .7.7 | Resume/acceleration circuit test |
| .7.8 | Instant/average circuit test |
| .7.9 | Reset circuit test |
| .8.0 | A/C clutch circuit test |
| -1.8.8 | Display check |
| .9.0 | System ready to display engine data |
| .9.5 | System ready for output cycling or in fixed spark mode |
| .9.6 | Output cycling |
| .0.0 | All diagnostics complete |