| 12 & 13 | RPM Signal | Distributor Or Circuit, Starter Ckt, ECU |
| 14 | Ignition Signal | Ignitor Or Circuit To ECU, ECU |
| 16 | ECT Signal | Transaxle ECU Or Wiring Circuit |
| 21 | O2 Sensor Signal | O2 Sensor Or Ckt, (1) Oxygen Sensor Heater, ECU |
| 22 | Coolant Temp. Sensor Signal | Coolant Temp. Sensor Or Ckt, ECU |
| 24 (2) | Intake Air Temp. Sensor Signal | Intake Air Temp. Sensor Or Ckt, ECU |
| 25 | Lean Air/Fuel Mixture | Injector Or Circuit, O2 Sensor Or Circuit, Fuel Pressure, Ign. System, Coolant Temp. Sensor,U |
| 26 | Rich Air/Fuel Mixture | Airflow Meter, ECU, Injector Or Ckt, O2 Sensor Or Ckt, Fuel Pressure, Cold Start Injector Or Ckt, Coolant Temp. Sensor |
| 27 (3) | Sub-O2 Sensor Signal | Sub-O2 Sensor Or Ckt, ECU |
| 31 & 32 | Airflow Meter Signal | Airflow Meter Or Circuit, ECU |
| 41 (2) | TPS Sensor Signal | Throttle Position Sensor Or Ckt, ECU |
| 42 (4) | VSS Signal | Vehicle Speed Sensor Or Ckt, ECU |
| 43 (4) | Starter Signal | Starter Signal Ckt, Ign. Switch Or Ckt, ECU |
| 51 (4) | Switch Condition Signal | A/C Switch Ckt, ECU, Neutral/Start Switch Or Ckt, TPS Or Ckt |
| 52 (1) | Knock Sensor Signal | Knock Sensor Or Circuit, ECU |
| 53 (1) | Knock Sensor Control (ECU) | ECU |
| 71 (3) | EGR System Malfunction | EGR System, EGR Temp. Sensor Or Ckt, ECU, (1) EGR BVSV |
| (1) Used on V6 models only. (2) CHECK ENGINE light comes on code sets on (Calif. only). (3) Used on Calif. only. (4) CHECK ENGINE light will not come on when code is set. |
