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 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	Stop the fuel pump for high pressure Limit the engine speed to 2000 RPM or less	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, P0607, P060A, P060D, 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 engine switch turned off
P0171, P0172, P0174 and P0175	Fuel trim	Air fuel ratio feedback control is stopped	Pass condition detected and then engine switch turned off
P0190, P0192 and P0193	Fuel pressure sensor	Stop the fuel pump for high pressure Limit the engine speed to 2000 RPM or less	Pass condition detected and then engine switch turned off
P0200, P0201, P0202, P0203, P0204, P0205, P0206 and P12FF	Injector driver (EDU)	Stop fuel injection for an abnormal cylinder and related other cylinders Limit the engine speed to 3000 RPM or less	Pass condition detected and then engine 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 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)	Stop the fuel pump for high pressure Limit the engine speed to 2000 RPM or less	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.