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Home >> Infiniti >> 2004 >> QX56 AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System >> DTC P0128: Thermostat Function >> Diagnostic Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Procedure

  1. CHECK ENGINE COOLANT TEMPERATURE SENSOR 

    Refer to COMPONENT INSPECTION .

    OK or NG

    OK: INSPECTION END

    NG: Replace engine coolant temperature sensor.

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