Intake Manifold Runner Control Actuator Internal Performance (Bank 1)
Internal self-diagnostics of the IMRC actuator on bank 1 report an off-spec condition — driver stage, position-feedback or thermal limit no longer matches the calibrated profile.
Affected components
- Imrc actuator
- Imrc position sensor
Common causes
- High likelihood: Actuator internal driver or sensor fault
- Low likelihood: Actuator overheated and derated
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.