P0665Intake Manifold Tuning Valve Control Circuit High Bank 2
- 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 intake manifold tuning valve switches the manifold length or plenum connection with engine speed (more torque low, more power high); it is not the runner or swirl flap (IMRC, P2004 ff). P0665 means the bank 2 control line stays high with the driver on – a short to voltage or overcurrent, after which the driver shuts off. Bank 2 codes require a V-engine manifold with two separately switched valves; many V engines use a single central valve between the plenums, and no manufacturer document available to us uses this code, so the description follows bank 1. At GM the bank 1 equivalent (P0662) flags 0.5 Ω or less to positive in 40 of 50 samples, with the lamp after two trips.
- What you may notice
- Check engine light (depending on the maker)
- Loss of power in part of the rev range
- Actuator does not click when switching
- Likely causes
- LikelyBank 2 control wire shorted to voltage
- PossibleActuator winding shorted (overcurrent)
- PossibleCorrosion or moisture in the connector
- RareOutput driver in the engine module faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €20 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.