What it means
The control module has detected the intake manifold runner control stuck closed on bank 1. The code does not establish the runner design or a particular effect on engine operation.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
The intake manifold runner control adjusts airflow through the intake passages on bank 1, commonly using flaps and an actuator. The control module monitors whether the bank 1 runners respond when commanded. P2006 sets when the system detects that the runners remain closed when they should move; the code does not specify the runner design or exact performance effect.
Common causes
Most likely first.
- Carbon deposits seize flap closed
- Actuator stuck or vacuum line collapsed
- Carbon or debris buildup preventing free movement
Symptoms
- Check-engine light
- Reduced engine power or sluggish acceleration
- Hesitation or uneven running
How to diagnose it
- Check freeze-frame and live runner command or position data to establish when bank 1 failed to move and whether the fault returns.
- Inspect bank 1 runner flaps and linkage for carbon deposits, debris, seizure, or a disconnected link.
- Look over the bank 1 actuator and, if vacuum-operated, its hoses and supply for damage, collapse, leaks, or loose connections.
- Use a scan tool to command runner movement and watch for matching actuator travel and position feedback.
- Test the bank 1 actuator and feedback or control circuit according to the manufacturer's procedure if visual checks do not explain the stuck position.
Common fixes
- Remove carbon or debris restricting bank 1 flap movement, where the assembly is serviceable.
- Repair a damaged, collapsed, or disconnected actuator vacuum hose or linkage.
- Clean and secure the bank 1 actuator electrical connector and repair damaged wiring.
- Replace a confirmed failed bank 1 actuator or position sensor.
Can I keep driving?
A short drive may be reasonable if the engine is stable, but reduced power or hesitation can affect acceleration and merging. Avoid hard acceleration and have the cause checked; prolonged operation can worsen drivability and emissions.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.