Intake Air Temperature Sensor 1/2 Correlation
The two intake air temperature sensors disagree by more than the calibrated correlation threshold during stable conditions. The ECU cannot determine which value is correct.
Affected components
- Intake air temperature sensor
- Iat wiring
Common causes
- High likelihood: One IAT sensor drifting
- Medium likelihood: Wiring issue on one sensor
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.