Intake Manifold Runner Position Sensor/Switch Circuit (Bank 1)
The position feedback signal of the IMRC flap on bank 1 is missing or implausible. Without feedback, the ECU cannot verify that the commanded runner position has been reached.
Affected components
- Imrc position sensor
- Imrc wiring
Common causes
- High likelihood: Position sensor failed
- Medium likelihood: Signal wire broken
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.