P2070Intake Manifold Tuning (IMT) Valve Stuck Open (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
- The tuning valve switches the manifold geometry for resonance charging; with a position sensor fitted, the engine computer can see whether the flap obeys. P2070 is logged when it was told to close and stays open. GM uses it in many tables: the 2006 and 2007 V6/four-cylinder sets flag a learn phase of 0.75 s or more, or five or more learn attempts, between 1000 and 3600 rpm; the 2015 and 2018 tables wait 5 s for the closed stop, count 320 of 400 samples at 12.5 ms and rate it Type B. The GM 2023/2024 tables print this code with a stuck-closed text, the reverse of J2012. Ford lists P2070 without MIL, although its own IMTV has no feedback. Without a sensor, P065E covers flap function; P2071 is the closed case.
- What you may notice
- Check engine light after the second faulty drive (GM Type B)
- Weaker pulling power in the speed range the closed flap is meant for
- Louder or different intake noise
- Likely causes
- LikelyFlap shaft sticking from oily carbon deposits fed by crankcase ventilation
- PossibleActuator motor or gear worn, flap stops short of the closed position
- PossibleActuator unclipped from the shaft or broken coupling
- RareLearn routine of the end stops aborted, e.g. after repairs or low battery voltage
- 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.