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HOMESERVICE MANUALSINFINITI2019Q70 3.7 LUXE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (ENGINE CONTROL SYSTEM (5.6L) (DTC/CIRCUIT DIAGNOSIS) (2 OF 9))DTC/CIRCUIT DIAGNOSISDTC P0111: IAT SENSORCOMPONENT FUNCTION CHECK
2019 Infiniti Q70 3.7 Luxe, AWD

Component Function Check

2019 Infiniti Q70 3.7 Luxe, AWDSECTION Component Function Check
WARNING: This page is about a different variant/trim than selected.
  1. CHECK INTAKE AIR TEMPERATURE (IAT) SENSOR 
    1. Turn ignition switch OFF.
    2. Disconnect mass air flow sensor (bank 1) harness connector.
    3. Check resistance between mass air flow sensor (bank 1) terminals as follows.

      Terminals

      Condition

      Resistance (kOhm)

      1 and 2

      Temperature [ deg.C (deg.F)]

      25 (77)

      1.800-2.200

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Proceed to Diagnosis Procedure .

  2. CHECK INTERMITTENT INCIDENT 

    Refer to Intermittent Incident .

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Proceed to Diagnosis Procedure .

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.