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Home › Infiniti › 2012 › QX56 AWD › Repair and Diagnosis › Engine Performance › System › Engine Control System - DTCS U0101 To P0153 › DTC P0127: IAT Sensor › Diagnosis Procedure

Diagnosis Procedure

  1. CHECK INTAKE AIR TEMPERATURE SENSOR

    Refer to "COMPONENT INSPECTION (INTAKE AIR TEMPERATURE SENSOR) ".

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Replace mass air flow sensor (with intake air temperature sensor).

  2. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END

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