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Home >> Infiniti >> 2013 >> M35h >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC P0112, P0113: IAT Sensor >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P0112 IAT SEN/CIRCUIT-B1
[Intake air temperature sensor circuit low input]
An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors

    (The sensor circuit is open or shorted.)

  • Intake air temperature sensor
P0113 IAT SEN/CIRCUIT-B1
[Intake air temperature sensor circuit high input]
An excessively high voltage from the sensor is sent to ECM.