Intake Manifold Runner Control Solenoid Circuit High (Bank 1)
Drive voltage at the IMRC solenoid on bank 1 is above the upper limit — short to supply or an open ground side. The solenoid is energised constantly or the driver protection trips.
Affected components
- Imrc solenoid
- Imrc wiring
Common causes
- High likelihood: Drive line shorted to supply
- Low likelihood: ECU driver stage failed
- 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.