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Home › Infiniti › 2005 › QX56 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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