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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 307 (Engine Control System (DTC/Circuit Diagnosis) (4.0L) (1 Of 4)) >> DTC/Circuit Diagnosis >> DTC P0112: IAT Sensor >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

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

    (IAT 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.
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