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Home >> Infiniti >> 2004 >> FX35 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 259 (Engine Control System) >> DTC P0128 Thermostat Function >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Infiniti FX45. However, it is still accessible from the selected car via links, so may be relevant.
  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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