DTC P0112 - IAT SENSOR CIRCUIT LOW VOLTAGE GMC Envoy I

Note. For circuit reference, see WIRING DIAGRAMS - 4.3L article.

Circuit Description

Intake Air Temperature (IAT) sensor is a thermistor that varies resistance based on temperature. As temperature of sensor increases, resistance decreases. High temperature will result in a low signal voltage.

Conditions for setting DTC

1. Vehicle speed at least 2 MPH.
2. No VSS DTCs are set.
3. Engine run time greater than 100 seconds.