Hyundai DTC P1112 – Intake air temperature (IAT) sensor- circuit high input/intermittent
DTC P1112 meaning on Hyundai
DTC P1112 for Hyundai indicates a high input or intermittent issue with the Intake Air Temperature (IAT) sensor circuit. The Engine Control Module (ECM) detects that the signal from the IAT sensor is higher than expected or fluctuating abnormally.
Hyundai DTC P1112 symptoms
- Check Engine Light (CEL) illuminated
- Decreased engine performance
- Potential fuel efficiency reduction
- Engine may run rough or stall
Hyundai DTC P1112 causes
- Faulty IAT sensor
- Wiring or connector issues in the IAT sensor circuit
- ECM malfunction
Hyundai DTC P1112 seriousness
The seriousness of DTC P1112 on a Hyundai depends on the driving conditions and the extent of the issue. Ignoring this DTC can lead to poor engine performance, reduced fuel efficiency, and potential engine damage if left unresolved.
How to diagnose DTC P1112 on Hyundai
- Use an OBD-II scanner to retrieve the DTC and freeze frame data
- Inspect the IAT sensor and its wiring for any visible damage
- Check the sensor’s resistance and voltage readings
- Perform a thorough inspection of the ECM and related circuits
How to fix DTC P1112 on Hyundai
- Replace the faulty IAT sensor if necessary
- Repair any damaged wiring or connectors in the IAT sensor circuit
- If the ECM is faulty, consider reprogramming or replacing it
- Clear the DTC and test drive the vehicle to ensure the issue is resolved
How to erase DTC P1112 on Hyundai
- Use an OBD-II scanner to clear the DTC
- If the issue has been fixed, the CEL should turn off after clearing the code
- Ensure the vehicle operates normally after clearing the DTC
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