P2071
Intake Manifold Tuning (IMT) Valve Stuck Closed Bank 1
Fuel & air metering (intake tuning)
Generic OBD-II
Low
What it means
P2071 means the intake manifold tuning valve on bank 1 is stuck in the closed position. This valve changes the effective intake runner length to optimize torque and power across the rev range, so a stuck valve usually shows up as reduced power in part of that range. The most common cause is carbon buildup. It is not a stall or no-start code.
Low
Can I keep driving? Safe to drive in most cases; you may notice reduced power in part of the rev range, but it isn't a stall or no-start code.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced power or torque in part of the rev range
- Slightly sluggish throttle response
- Minor drop in fuel economy
Common causes
Most likely first
- Carbon buildup or debris jamming the IMT valve closedLikely
- Failed or seized IMT valve actuatorCommon
- Open or shorted wiring / poor connection in the valve circuitCommon
- Broken or disconnected vacuum line (on vacuum-actuated designs)Less often
- Faulty engine control module (ECM/PCM)Less often
How to diagnose & fix
Work through it in order
- Inspect the IMT valve and linkage for carbon buildup or debris holding it closed; clean or free as needed.
- Check the actuator connector and wiring for opens, shorts, or corrosion; repair as needed.
- On vacuum-actuated systems, verify the vacuum supply and hoses are intact.
- Test the actuator's operation and replace the valve/actuator if it won't move.
- If mechanicals and wiring are good, have the ECM/PCM evaluated. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2071?+
Usually yes. You may feel weaker power in part of the rev range, but it won't strand you. Fix it to restore full performance.
Can I just clear P2071?+
It will return if the valve is still stuck, so clean or repair the valve rather than only clearing the code.
Related codes
Often seen with P2071
Read & clear P2071 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