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Home › Infiniti › 2004 › FX35 AWD › Repair and Diagnosis › Engine Performance › Engine Control System › DTC P0128 Thermostat Function › Diagnostic Procedure

Diagnostic Procedure

  1. Check Engine Coolant Temperature Sensor 

    Refer to COMPONENT INSPECTION .

    OK or NG

    1. OK: Inspection end 
    2. NG: Replace engine coolant temperature sensor.

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