Powertrain, generic (extended)

P206F Intake Manifold Tuning (IMT) Valve Stuck Closed (Bank 2)

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

Here the bank 2 tuning valve ignores an open request: the engine computer asks it to swing to the open end stop, yet the feedback still shows the closed position. The code only makes sense on a V-engine with a separately switched flap per bank, and no manufacturer publishes it; GM and Ford describe a single valve and use P2071 for the stuck-closed case. GM counts that fault when the open position is missing after at least 5 s and sets it as Type B. Electrical faults in the drive circuit belong to P0663 and onward, position sensor faults on bank 2 to P207A to P207E. A flap jammed shut usually costs top-end power more than low-speed torque, so the car may feel flat at higher revs; P206E is the opposite direction.

Likely causes

Bank 2 flap seized in its closed position by deposits or a dry shaft bearing
Bank 2 actuator internally defective, no longer produces the opening torque
On vacuum-operated designs a leaking hose or check valve leaves the actuator without vacuum
Broken flap seal or foreign object blocking the flap travel

Symptoms

  • Engine feels flat at high rpm
  • Check engine light (manufacturer-dependent)
  • Barely noticeable at moderate driving

Repair estimate

DifficultyMediumDIY possible
Parts and labour€60–500
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

imt valveimt actuator

Related codes

P206EP2071P207AP0663P065F

References: law.cornell.edu, gsi.ext.gm.com, en.wikipedia.org.