P0112 Intake Air Temperature Sensor Circuit Low
The IAT sensor reports an unrealistically high temperature (low signal voltage).
Common causes
- Shorted sensor or wiring
- Faulty IAT sensor
Symptoms
- Check engine light
- Possible hard cold starts
What to check
- Check reading on a cold engine
- Inspect harness for shorts to ground
Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0112, follow the service information for that make and model.