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Home >> Infiniti >> 2017 >> QX80 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (1 Of 4) >> DTC/Circuit Diagnosis >> DTC P0127: IAT Sensor >> DTC Logic >> 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
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