Intake Manifold Runner Control Stuck Closed Bank 2
The Powertrain Control Module (PCM) has detected that the Intake Manifold Runner Control (IMRC) system for Bank 2 is stuck in the closed position. This means the runner flaps, which adjust airflow to optimize engine performance across different RPMs, are unable to open when commanded.
While the vehicle is generally safe to drive, leaving this unaddressed can lead to poor engine performance, reduced fuel economy, and potential carbon buildup issues. It should be diagnosed and repaired soon to restore proper engine operation.
Common symptoms
- Illuminated Check Engine Light
- Poor acceleration or lack of power at higher RPMs
- Rough idle or engine hesitation
- Decreased fuel economy
- Engine surging during acceleration
Likely causes
- Carbon buildup restricting the intake manifold runner flaps
- Faulty Intake Manifold Runner Control (IMRC) actuator or solenoid
- Broken or disconnected linkage between the actuator and the flaps
- Vacuum leaks in the IMRC control lines (on vacuum-operated systems)
- Damaged wiring or poor electrical connections at the IMRC actuator
What to check before replacing parts
Visually inspect the IMRC linkage and wiring for Bank 2.
Look for: Look for disconnected, broken, or binding linkage arms, as well as frayed wires or corroded connectors at the actuator.
Use a bi-directional scan tool to command the IMRC actuator open and closed.
Look for: Listen for the actuator moving and observe the scan tool data to see if the position sensor reflects the commanded state.
Test the vacuum supply lines to the IMRC actuator (if vacuum-operated).
Look for: Connect a vacuum gauge to ensure the actuator is receiving proper vacuum from the control solenoid when commanded.
Test the electrical circuit at the IMRC actuator connector.
Look for: Use a multimeter to verify proper voltage, ground, and control signals from the PCM according to the manufacturer's wiring diagram.
Remove the intake manifold to physically inspect the runner flaps.
Look for: Check for severe carbon buildup, physical damage, or mechanical binding that prevents the flaps from opening manually.
This page explains the generic P2007 definition and is general reference information, not a diagnosis for your specific vehicle. Actual causes, severity, and repairs vary by make, model, engine, and mileage — always confirm with a scan tool and a qualified technician before replacing parts.
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