P2006Intake Manifold Runner Control Stuck Closed (Bank 1)
What it means
The intake manifold runners (or swirl flaps) stay closed when the ECU commands them open.
Symptoms
- Loss of power at low or high rpm
- Rough idle
- Rattling flaps in the intake
Common causes
- Flaps stuck with carbon or broken
- Faulty runner actuator or vacuum supply
- Faulty position sensor
- Wiring fault
What to check first
- Command the runners and watch the position feedback
- Check the vacuum supply on vacuum actuators
- Inspect the flaps and linkage for carbon and breakage
Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.