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.
| DTC | Component | Fail-Safe Operation | Fail-Safe Deactivation Condition |
|---|---|---|---|
| P0011, P0015, P0021 and P0025 | VVT system |
|
Pass condition detected |
| P0031, P0032, P0051 and P0052 | Air fuel ratio sensor heater | ECM turns off air fuel ratio sensor heater | Engine switch off |
| P0037, P0038, P0057 and P0058 | Heated oxygen sensor heater | ECM turns off heated oxygen sensor heater | Engine switch off |
| P0087 and P0088 | Fuel pump for high pressure |
|
Pass condition detected |
| P0102 and P0103 | Mass air flow meter | 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, P060D, P060E, P0657, P1607, 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 then adjusts engine output by controlling fuel injection (intermittent fuel cut) and ignition timing in accordance with accelerator pedal opening angle to allow vehicle to continue at minimal speed*1 |
Pass condition detected and then engine switch turned off |
| P0190, P0192 and P0193 | Fuel pressure sensor |
|
Pass condition detected and then engine switch turned off |
| P0200, P0201, P0202, P0203, P0204, P0205, P0206 and P12FF | Injector driver (EDU) |
|
Pass condition detected and then engine switch turned off |
| P0300, P0301, P0302, P0303, P0304, P0305 and P0306*2 |
|
When a misfire occurs, fuel cut is performed for catalyst overheat malfunction prevention
|
Pass condition detected and then engine switch turned off |
| P0327, P0328, P0332 and P0333 | Knock sensor | The ECM sets ignition timing to maximum retard | Engine switch off |
| P0351, P0352, P0353, P0354, P0355 and P0356 | Igniter | The ECM cuts fuel | Pass condition detected |
| P1235 | Fuel pump for high pressure (spill control valve) |
|
Pass condition detected |
| P2120, P2121, P2122, P2123, P2125, P2127, P2128 and P2138 | Accelerator pedal sensor assembly | Accelerator pedal sensor assembly has 2 sensor circuits: Main and Sub If either circuit malfunctions, the ECM controls engine using the other circuit If both circuits malfunction, the ECM regards the accelerator pedal as being released. As a result, the throttle valve is closed and the engine idles |
Pass condition detected and then engine switch turned off |
| P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255, P2256 | Air fuel ratio sensor | Air fuel ratio feedback control is stopped | Pass condition detected and then engine switch turned off |
NOTE:
- *1: The vehicle can be driven slowly when the accelerator pedal is depressed slowly. If the accelerator pedal is depressed quickly, the vehicle may speed up and slow down erratically.
- *2: Misfire related fail-safe operations occur when catalyst overheat malfunctions occur.