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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 86 (Engine Control System (DTC/Circuit Diagnosis) (2 Of 5)) >> DTC/Circuit Diagnosis >> DTC P0111: IAT Sensor >> DTC Description >> DTC Detection Logic

DTC Detection Logic

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

The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, FTT sensor, and EOT sensor) shows that the voltage signal of the IAT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0111

IAT SENSOR 1 B1

(Intake air temperature sensor 1 circuit range/performance bank 1)

Diagnosis condition

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Signal (terminal)

Voltage signal transmitted from IAT sensor to ECM

Threshold

The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, FTT sensor, and EOT sensor) shows that the voltage signal of the IAT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state

Diagnosis delay time

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