P2008
Intake Manifold Runner Control Circuit/Open Bank 1
Fuel & air metering
Generic OBD-II
Low
What it means
P2008 means the PCM has detected an open in the control circuit for the bank 1 intake manifold runner control (IMRC) — the actuator that opens and closes the intake runner flaps to tune airflow. It's usually a wiring, connector, or actuator fault, and it mainly affects low-speed power and emissions rather than the engine's ability to run.
Low
Can I keep driving? Safe to drive; you may notice slightly reduced low-end power or a minor rough spot, but the engine runs normally otherwise.
Common symptoms
What you'll notice
- Check-engine light on
- Slightly reduced low-speed power or torque
- Occasional rough idle or hesitation
- Minor drop in fuel economy
Common causes
Most likely first
- Open or shorted wiring in the IMRC control circuitLikely
- Faulty intake manifold runner control (IMRC) actuatorCommon
- Faulty IMRC solenoidCommon
- Blocked or disconnected vacuum hose (on vacuum-operated systems)Less often
- Damaged powertrain control module (PCM)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data, then visually inspect the IMRC wiring and connectors for opens, corrosion, or damage.
- On vacuum-operated systems, check the vacuum hoses and actuator for leaks or blockage.
- Test the IMRC actuator/solenoid operation and replace if it fails to move or is out of spec.
- Repair any damaged wiring; consider the PCM only after the circuit and actuator check out.
FAQ
Quick answers
Is it safe to drive with P2008?+
Yes. The runners typically default to a position the engine can still run on, so you'll mostly notice reduced low-end response and the warning light. Fix it to restore full performance and pass emissions.
Can I just clear P2008?+
It will return until the open circuit or stuck actuator is repaired — clearing alone won't fix the wiring or solenoid.
Related codes
Often seen with P2008
Read & clear P2008 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX