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Home >> Infiniti >> 2023 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (1 Of 5) >> Engine (ECM) >> DTC P0127: IAT Sensor >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0127

IAT SENSOR-B1

(Intake air temperature too high)

Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signal from Intake air temperature sensor.

  • Harness or connectors

    (The intake air temperature sensor circuit is open or shorted)

  • Intake air temperature sensor