P2071Intake Manifold Tuning (IMT) Valve Stuck Closed (Bank 1)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- Counterpart to P2070: the bank 1 tuning valve receives an open command, but the position feedback keeps showing it shut. In GM's 2006 and 2007 tables the check simply compares commanded and actual flap position under load between 1000 and 3600 rpm, Type B. From 2015 on (also engine LWE in 18OBDG03A) GM requires that the open stop is reached within 5 s; 320 failed out of 400 samples set the code, and it stays blocked while P0660 to P0662 or the sensor codes P2077/P2078 are active. GM's 2023/2024 tables describe P2071 as stuck open, so on those vehicles the meaning of P2070/P2071 should be checked against the service data. Ford lists the code without MIL. Expect lost power at high rpm; bank 2 uses P206F.
- What you may notice
- Lack of power at high engine speed
- Check engine light (GM Type B, Ford without MIL)
- Engine otherwise runs normally
- Likely causes
- LikelyFlap seized shut by deposits or corroded shaft bushings
- PossibleActuator defective, no longer turns the flap against its return spring
- RareWeak supply to the actuator from a corroded connector or relay contact
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.