Fail-Safe Chart
If any of the following DTCs are set, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily.
FAIL-SAFE DEACTIVATION CONDITIONS
| DTCs | Components | Fail-Safe Operations | Fail-Safe Deactivation Conditions |
|---|---|---|---|
| P0031, P0032, P0037 and P0038 | Heated Oxygen (HO2) Sensor Heater | ECM turns off HO2 Sensor heater | Ignition switch OFF |
| P0100, P0102 and P0103 | Mass Air Flow (MAF) Meter | ECM calculates ignition timing accordance with engine RPM and throttle valve position. | Pass condition detected |
| P0110, P0112 and P0113 | Intake Air Temperature (IAT) Sensor | ECM estimates IAT to be 20°C (68°F). | Pass condition detected |
| P0115, P0117 and P0118 | Engine Coolant Temperature (ECT) Sensor | ECM estimates ECT to be 80°C (176°F). | Pass condition detected |
| P0120, P0122 and P0123 | Throttle Position (TP) Sensor | ECM cuts fuel intermittently. | Pass condition detected and ignition switch OFF |
| P0121 | TP Sensor | ECM cuts fuel intermittently. | Pass condition detected and ignition switch OFF |
| P0325 | Knock Sensor | ECM sets ignition timing to maximum retard. | Ignition switch OFF |
| P0351 to P0354 | Igniter | ECM cuts fuel. | Pass condition detected |