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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (1 Of 4)) >> DTC/Circuit Diagnosis >> P0123 TP Sensor >> DTC Description >> PR25DD engine >> Fail-Safe

PR25DD engine: Fail-Safe

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Engine operating condition in fail-safe mode

Fail safe mode

Vehicle behavior

Device fix mode
  • This mode fixes the electric IVT motor and 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).
  • A control signals is not transmitted to EGR volume control valve and the EGR volume control is deactivated.

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. So, the acceleration will be poor.
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