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Home >> Infiniti >> 2021 >> QX50 Essential, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (4 Of 5) >> DTC/Circuit Diagnosis >> DTC P2135: TP Sensor >> DTC Description >> Fail-Safe
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DTC Description: Fail-Safe

Engine operating condition in fail-safe mode

Fail safe mode

Vehicle behavior

Device fix mode
  • This mode fixes the EVT control solenoid valve in the reference position.
  • The intake manifold runner control valve motor is turned OFF (intake manifold runner control valve opens).

Others

The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees.

The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. Therefore, the acceleration will be poor.

NOTE: If accelerator pedal position sensor 1 and 2 malfunction at the same time conducts following control.
  • ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
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