Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 1)
The IMRC position sensor signal on bank 1 reads below the lower limit. Usually a short to ground on the signal wire or a failed sensor.
Affected components
- Imrc position sensor
- Imrc wiring
Common causes
- High likelihood: Signal wire shorted to ground
- Medium likelihood: Position sensor failed low
- Low likelihood: Connector pins corroded - high contact resistance
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.