What does code P1112 mean?

Q: What does code P1112 mean?

Intake Air Temperature Sensor Intermittent Low Voltage. P1112 on a GM vehicle means the engine control module has detected an intermittent low voltage signal from the intake air temperature sensor circuit, which typically indicates a momentary short to ground or an erratic connection. The computer sets this code when the sensor voltage drops below the expected threshold for a calibrated period, often due to a loose terminal, chafed wire, or failing sensor.

DTC codes / GM codes / P1112

P1112 · GMIntake Air Temperature Sensor Intermittent Low Voltage

P1112 on a GM vehicle means the engine control module has detected an intermittent low voltage signal from the intake air temperature sensor circuit, which typically indicates a momentary short to ground or an erratic connection. The computer sets this code when the sensor voltage drops below the expected threshold for a calibrated period, often due to a loose terminal, chafed wire, or failing sensor.

SystemPowertrain

Code typeGM specific

SeverityLow

Fix difficultyIntermediate

AreaFuel and air metering

Guidance is general and written for GM vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.