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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Control System (DTC/Circuit Diagnosis) (5.6L) (4 Of 6)) >> DTC/Circuit Diagnosis >> DTC P0643: Sensor Power Supply >> DTC Description >> Fail-Safe

DTC Description: Fail-Safe

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DTC No.

Detected items

Engine operating condition in fail-safe mode

P0643

Sensor power supply

  • ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (Approx. 5 decrees) by the return spring.
  • The position of the following components is fixed.
    • Intake valve timing control solenoid valve
    • Exhaust valve timing control solenoid valve