If any of the following DTCs are stored, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily or stops fuel injection.
| DTC | Component | Fail-safe Operation | Fail-safe Deactivation Condition |
|---|---|---|---|
| P0031 P0032 P101D |
Air fuel ratio sensor heater | ECM turns off air fuel ratio sensor heater | Power switch off |
| P0037 P0038 P102D |
Heated oxygen sensor heater | ECM turns off heated oxygen sensor heater | Power switch off |
| P0102 P0103 |
Mass air flow meter sub-assembly | ECM calculates ignition timing according to engine speed and throttle valve position | Pass condition detected |
| P0106 P0107 P0108 |
Manifold absolute pressure sensor | ECM turns off EGR valve operate | Pass condition detected |
| P0112 P0113 |
Intake air temperature sensor | ECM estimates intake air temperature to be 20°C (68°F) | Pass condition detected |
| P0115 P0117 P0118 |
Engine coolant temperature sensor | ECM estimates engine coolant temperature 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 P2135 |
Electronic throttle control system | ECM cuts off throttle actuator current and throttle valve returns to the 5.5° 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 |
Knock control sensor | ECM sets ignition timing to maximum retard | Power switch off |
| P0351 to P0354 | Ignition coil assembly (Igniter) |
ECM cuts fuel injection | Pass condition detected |
| P0401 P0403 |
EGR valve assembly | ECM assumes that EGR valve is closed, so that ignition timing controlled to a safe value | Pass condition detected |
| P261B | Engine water pump assembly | Output duty ratio of the WPO terminal repeats a cycle of 0% for 30 seconds and then 85% for 5 seconds*2 | Power switch off |
| P261C | Engine water pump assembly | Output duty ratio of the WPO terminal remains at 0%*2 | Power switch off |
| P261D | Engine water pump assembly | Output duty ratio of the WPO terminal remains at 0%*2 | Power switch off |
Tech Tips
*1: The vehicle can be driven slowly when the accelerator pedal is depressed firmly and slowly.
*2: When the coolant temperature reaches 105°C (221°F), the engine is stopped and the hybrid system is solely used to driving vehicle.