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.
| DTCs | Components | Fail-Safe Operations | Fail-Safe Deactivation Conditions |
|---|---|---|---|
| P0031, P0032, P0051 and P0052 | Air-Fuel Ratio (A/F) Sensor Heater | The ECM turns off A/F sensor heater | Engine switch off |
| P0037, P0038, P0057 and P0058 | Heated Oxygen (HO2) Sensor Heater | The ECM turns off HO2 sensor heater | Engine switch off |
| P0102 and P0103 | Mass Air Flow (MAF) Meter | The ECM calculates ignition timing according to engine speed and throttle valve position | Pass condition detected |
| P0112 and P0113 | Intake Air Temperature (IAT) Sensor | The ECM estimates IAT to be 20°C (68°F) | Pass condition detected |
| P0115, P0117 and P0118 | Engine Coolant Temperature (ECT) Sensor | The ECM estimates ECT to be 80°C (176°F) | Pass condition detected |
| P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0604, P0606, P0607, P060A, P060B, P060D, P060E, P0657, P2102, P2103, P2111, P2112, P2118, P2119 and P2135 | Electronic Throttle Control System (ETCS) | The ECM cuts off throttle actuator current and the throttle valve returned to the 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 angle, to allow vehicle to continue at minimal speed*1 |
Pass condition detected and then engine switch turned off |
| P0300, P0301, P0302, P0303, P0304, P0305, P0306*2 |
|
When catalyst damage misfire occurs (MIL blinking), following fail-safe operation 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 to P0356 | Igniter | The ECM cuts fuel | Pass condition detected |
| P2120, P2121, P2122, P2123, P2125, P2127, P2128 and P2138 | Accelerator Pedal Position (APP) Sensor | APP sensor has 2 sensor circuits: Main and Sub If either of circuits malfunctions, the ECM controls engine using the other circuit If both of circuits malfunction, the ECM regards accelerator pedal as being released. As a result, throttle valve is closed and engine idles |
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.