Intake Manifold Runner Position Sensor/Switch Circuit Open (Bank 2)
The ECU detects an open circuit on the IMRC position sensor on bank 2. Without position feedback the ECU cannot confirm runner switching and falls back to a default mode.
Affected components
- Imrc position sensor b2
- Imrc wiring
Common causes
- High likelihood: Sensor element open
- Medium likelihood: Signal wire open
- Low likelihood: Pin pushed back out of connector body
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.