Fail-Safe Chart [11/2021 - ]

WARNING: This page is about a different car, the 2025 Lexus NX 350, 2024 Lexus NX 350, 2023 Lexus NX 350, and 2022 Lexus NX 350. However, it is still accessible from the selected car via links, so may be relevant.

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 Code	Component	Fail-Safe Operation	Fail-Safe Deactivation Condition
P0011-00 P0012-00	VVT system	Intake VVT maximum retarded contact. Boost prohibited. Idle up (control of combustion worsening).	Pass condition detected and then ignition switch turned off
P0015-00	VVT system	Exhaust VVT maximum advance contact. Boost prohibited. Idle up (control of combustion worsening).	Pass condition detected and then ignition switch turned off
P0016-00	VVT system	Intake VVT maximum retarded contact. Idle up (control of combustion worsening).	Pass condition detected and then ignition switch turned off
P0017-00	VVT system	Exhaust VVT maximum advance contact. Idle up (control of combustion worsening).	Pass condition detected and then ignition switch turned off
P00CF-62 P0235-11 P0235-15	No. 2 turbo pressure sensor	Boost prohibited.	Pass condition detected
P0030-12 P0030-13 P101A-9E	Air fuel ratio sensor (sensor 1) heater	The ECM turns off the air fuel ratio sensor (sensor 1) heater.	Ignition switch off
P0036-12 P0036-13 P102A-9E	Air fuel ratio sensor (sensor 2) heater	The ECM turns off the air fuel ratio sensor (sensor 2) heater.	Ignition switch off
P007A-11 P007A-15	Intake air temperature sensor (No. 1 turbo pressure sensor)	The ECM estimates the intake air temperature to be 45°C (113°F). Output power is limited.	Pass condition detected
P0087-00 P0088-00 P1235-13	Fuel (engine room side) pump assembly (for high pressure side)	The ECM performs fuel-cut when the engine speed and engine load are high. Fuel pressure is set to 200 kPa (29 psi)	Ignition switch off
P0100-12 P0100-14	Mass air flow meter sub-assembly	The ECM calculates ignition timing according to the engine speed and throttle valve position. Boost prohibited	Pass condition detected and then ignition switch turned off
P0110-11 P0110-15	Intake air temperature sensor (mass air flow meter sub-assembly)	The ECM estimates the intake air temperature to be 20°C (68°F). Boost prohibited	Pass condition detected and then ignition switch turned off
P0115-11 P0115-15	Engine coolant temperature sensor (for outlet side)	The ECM estimates the engine coolant temperature to be 80°C (176°F).	Pass condition detected
P01E3-11 P01E3-15	Engine coolant temperature sensor (for inlet side)	The engine coolant temperature judgment value (for inlet side) is changed to the outlet coolant temperature - 5°C (-9°F). The target engine coolant temperature is set to 82°C (180°F).	Pass condition detected
P0120-11 P0120-15 P0120-1C P0220-11 P0220-15 P0604-44 P0606-09 P0606-47 P0606-94 P0607-47 P0607-87 P060D-49 P060E-49 P0613-47 P0657-14 P0657-9E P16B0-9F P2100-18 P2100-19 P2111-72 P2111-73 P2119-00 P2119-04 P2119-77 P2119-9B P2135-2B	Electronic throttle control system	The ECM cuts off throttle actuator current and the throttle valve is returned to a 9° throttle position by the return spring. The ECM then adjusts the engine output by controlling fuel injection (intermittent fuel-cut) and ignition timing in accordance with the accelerator pedal angle to allow the vehicle to be driven at a low speed*1.	Pass condition detected and then ignition switch turned off
P0190-11 P0190-15	Fuel pressure sensor (for high pressure)	The ECM performs fuel-cut when the engine speed and engine load are high. Fuel pressure is set to 200 kPa (2 kgf/cm² , 29 psi)	Pass condition detected and then ignition switch turned off
P0201-13 P0202-13 P0203-13 P0204-13 P062D-13	ECM (injector driver)	The ECM performs fuel-cut when the engine speed is 1000 rpm or more.	Pass condition detected and then ignition switch turned off
P0235-1C	Turbocharger system	Boost prohibited.	Ignition switch off
P0234-00 P0243-13	Turbocharger system	Output is limited.	Ignition switch off
P026A-00	Intercooler system	Output power is limited.	Pass condition detected
P0300-00 P0300-27 P0300-85 P0301-00 P0302-00 P0303-00 P0304-00 *2	Fuel injector assembly Electronic throttle control system	When a catalyst-damaging misfire occurs (MIL blinking), the following fail-safe operation is performed for catalyst overheat malfunction prevention. Under a low load and at a low engine speed: - Fuel cut is performed on the malfunctioning cylinder. Under a high load and at a high engine speed: - Throttle valve opening angle control is performed. - Fuel cut is performed on all cylinders or the malfunctioning cylinder.	Pass condition detected and then ignition switch turned off
P0325-11 P0325-15	Knock control sensor	The ECM sets the ignition timing to maximum retard.	Ignition switch off
P0504-2B	Stop light switch assembly	The accelerator pedal opening angle is fixed when there is an accelerator pedal malfunction or history of a malfunction.	Pass condition detected and then ignition switch turned off
P0520-12 P0520-14 P0520-24 P0520-2A	Oil pressure sensor (oil pressure sender gauge assembly)	Current to the oil pressure control valve assembly is cut in order to fully close the oil pressure control valve assembly so that the pump operates at maximum capacity.	Pass condition detected and then ignition switch turned off
P0524-77 P15F0-09 P15F0-77	Engine oil pressure control system	Current to the oil pressure control valve assembly is cut in order to fully close the oil pressure control valve assembly so that the pump operates at maximum capacity. The maximum engine speed is limited in accordance with the abnormal pressure.	Pass condition detected and then ignition switch turned off
P0560-14	ECM +B circuit	Generator command is maintained.	Pass condition detected and then ignition switch turned off
P06DA-13	Oil pressure control valve assembly	Current to the oil pressure control valve assembly is cut in order to fully close the oil pressure control valve assembly so that the pump operates at maximum capacity.	Pass condition detected and then ignition switch turned off
P107A-11 P107A-15	No. 2 fuel pressure sensor (for low pressure side)	Fuel pump (for low pressure side) control is maintained. Output power is limited.	Pass condition detected and then ignition switch turned off
P1378-00	Pre-ignition	Output is limited in low-speed boost region.	Clear DTC after recovering to normal condition
P15F1-09	Engine oil pressure control system	Current to the oil pressure control valve assembly is cut in order to fully close the oil pressure control valve assembly so that the pump operates at maximum capacity. Output power is limited.	Pass condition detected and then ignition switch turned off
P15F1-77	Engine oil pressure control system	Current to the oil pressure control valve assembly is cut in order to fully close the oil pressure control valve assembly so that the pump operates at maximum capacity.	Pass condition detected and then ignition switch turned off
P16B3-19 P16B4-79 P16B8-71	Water control valve	Control of water control valve is stopped. Output power is limited.	Pass condition detected and then ignition switch turned off
P16B5-11 P16B5-15	Ball valve position sensor (water control valve)	Water control valve drive duty of 25% is output (only when the ambient temperature is 0°C (32°F) or higher). Output power is limited.	Pass condition detected and then ignition switch turned off
P2120-12 P2120-14 P2120-1C P2120-1F P2120-99 P2125-12 P2125-14 P2125-1F P2138-2B	Accelerator pedal (with sensor) rod assembly	The accelerator pedal position sensor has 2 sensor circuits: Main and Sub. If either circuit malfunctions, the ECM limits the engine output. 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 ignition switch turned off
P2182-11 P2182-15	Engine coolant temperature sensor (for cylinder head side)	Water stop control of water control valve is prohibited.	Pass condition detected and then ignition switch turned off
P21CF-13 P21D0-13 P21D1-13 P21D2-13	Port fuel injector assembly	The ECM performs fuel-cut when the engine speed is 1000 rpm or more.	Pass condition detected and then ignition switch turned off
P2226-11 P2226-15	Atmospheric pressure sensor (ECM)	Boost prohibited.	Ignition switch off
P2237-11 P2237-12 P2237-13 P2237-16 P2237-17 P2237-1B P2251-11 P2251-12	Air fuel ratio sensor (sensor 1)	Air fuel ratio sensor (sensor 1) air fuel ratio feedback control is stopped.	Pass condition detected and then ignition switch turned off
P22AB-11 P22AB-12 P22AB-13 P22AB-16 P22AB-17 P22B2-11 P22B2-12	Air fuel ratio sensor (sensor 2)	Control based on air fuel ratio sensor (sensor 2) air fuel ratio feedback is stopped. The ECM turns off the air fuel ratio sensor (sensor 2) heater.	Pass condition detected and then ignition switch turned off

HINT:

*1: The vehicle can be driven slowly when the accelerator pedal is depressed firmly and 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.