Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 1)
The IMRC position sensor signal on bank 1 reads above the upper limit. Typically a short to supply, an open ground reference, or a sensor that failed high.
Affected components
- Imrc position sensor
- Imrc wiring
Common causes
- High likelihood: Signal wire shorted to supply
- Medium likelihood: Sensor ground open
- 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.