P0111 - IAT Sensor Range/Performance

Intake air temperature sensor signal out of expected range.

Code Overview

Intake air temperature sensor signal out of expected range.

Common Causes

• IAT sensor failure
• Wiring/connectors issue
• Sensor contamination

Diagnostic Steps

1. Compare IAT to ambient on cold start
2. Inspect connector/wiring
3. Verify sensor resistance/voltage

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

Browse the closest code-family pages when the same fault pattern often shows up nearby.

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.