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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
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, P0607, 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 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 power switch turned off
P0300, P0301, P0302, P0303, P0304, P0305 and P0306*2
  • Fuel injector assembly
  • Electronic throttle control system
When a misfire occurs, fuel cut is performed for catalyst overheat malfunction prevention
  • During normal load and normal engine speed (MIL is blinking)

    - Fuel cut is performed on malfunctioning cylinder

  • During high load and high engine speed (MIL is blinking)

    - Throttle valve opening angle control is performed

    - All cylinder fuel cut or malfunction cylinder fuel cut

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
P0401 Exhaust Gas Recirculation Flow ECM assumes that EGR valve is closed, and ignition advance is controlled to a safe value Pass condition detected
P0403 Exhaust Gas Recirculation Control Circuit ECM assumes that EGR valve is closed, and ignition advance is controlled to a safe value Pass condition detected
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.