Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic Bank 2
Intermittent dropouts or noise on IAT sensor 2 bank 2 signal. The intake air temperature sensor feeds the ECM's density calculation — a drifted reading miscalculates fuel mass and pushes mixture lean (cold reading) or rich (hot reading).
Affected components
- Iat sensor 2
- Sensor wiring
Common causes
- High likelihood: Connector loose or corroded
- Low likelihood: Connector with intermittent contact under vibration
- Low likelihood: Harness routed against vibrating component
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
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.