P112E GMC Possible Causes
- Faulty intake air temperature sensor
- Intake air temperature sensor harness is open or shorted
- Poor electrical connection in the intake air temperature sensor circuit
How is P112E GMC Code Repaired?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Check engine light on (or service engine soon warning light)
P112E GMC Meaning
The intake air temperature (IAT) sensor contains a semiconductor device that changes resistance based on temperature (a thermistor). The IAT sensor is located in the air intake passage of the engine’s air intake system. The IAT sensor has a signal circuit and a ground circuit. The powertrain control module (PCM) monitors the intake air temperature sensor signal. The PCM sets the OBDII code when the intake air temperature sensor signal is outside factory specifications.