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Home >> Infiniti >> 2012 >> G25 x >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0128 >> DTC P0128: Thermostat Function >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK ENGINE COOLANT TEMPERATURE SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Replace engine coolant temperature sensor.

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