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Home >> Nissan-Datsun >> 2012 >> 370Z Base, 2D Convertible, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 Through P0128 >> DTC P0125: ECT Sensor >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection M95. Refer to Ground Inspection in CIRCUIT INSPECTION .

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connection.

  2. CHECK ENGINE COOLANT TEMPERATURE SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Replace engine coolant temperature sensor.

  3. CHECK THERMOSTAT OPERATION

    When the engine is cold [lower than 70°C (158°F)] condition, grasp lower radiator hose and confirm the engine coolant does not flow.

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair or replace thermostat. Refer to REMOVAL AND INSTALLATION .

  4. CHECK INTERMITTENT INCIDENT

    Refer to INTERMITTENT INCIDENT .

    INSPECTION END

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