If any of the following DTCs are set, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily.
| DTC | Component | Fail-Safe Operation | Fail-Safe Deactivation Condition |
|---|---|---|---|
| P0031, P0032, P0051, P0052, P101D and P103D | Air fuel ratio sensor heater | ECM turns off air fuel ratio sensor heater | Power switch off |
| P0037, P0038, P0057, P0058, P102D and P105D | Heated oxygen sensor heater | ECM turns off heated oxygen sensor heater | Power switch off |
| P0102 and P0103 | Mass air flow meter sub-assembly | ECM calculates ignition timing according to engine speed and throttle valve position | Pass condition detected |
| P0107 and P0108 | Manifold absolute pressure sensor | ECM calculates ignition timing according to engine speed and throttle valve position | Pass condition detected |
| P0112 and P0113 | Intake air temperature sensor | ECM estimates intake air temperature sensor to be 20°C (68°F) | Pass condition detected |
| P0115, P0117 and P0118 | Engine coolant temperature sensor | ECM estimates engine coolant temperature sensor to be 80°C (176°F) | Pass condition detected |
| P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0604, P0606, P060A, P060B, P060E, P0657, P2102, P2103, P2111, P2112, P2118, P2119 and P2135 | Electronic throttle control system | The ECM cuts off throttle actuator current and the throttle valve returns to 6° throttle position by return spring The ECM stops the engine and the vehicle can be driven using solely the hybrid system*1 |
Pass condition detected and then power switch turned off |
| P0327, P0328, P0332 and P0333 | Knock control sensor | The ECM sets ignition timing to maximum retard | Power switch off |
| P0351, P0352, P0353, P0354, P0355 and P0356 | Igniter | The ECM cuts fuel | Pass condition detected |
Note
*1: The vehicle can be driven slowly when the accelerator pedal is depressed firmly and slowly.