Powertrain, generic (extended)

P206E Intake Manifold Tuning (IMT) Valve Stuck Open (Bank 2)

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

Reserved for engines whose second cylinder bank has its own intake manifold tuning valve, the flap that switches plenum volume or runner length for resonance charging. The code says the bank 2 flap was commanded shut but its position feedback still reports it open. No manufacturer documents P206E publicly; the GM and Ford tables checked cover only a single tuning valve, logged as P2070/P2071. By analogy with GM, a fault would be counted once the closed end stop is not reached for several seconds and confirmed on a second trip. CARB lists variable-length intake runner systems as monitored output components. The driver mostly notices a torque dip in one speed band; P206F is the reverse case, P2070 the bank 1 counterpart.

Likely causes

Flap or shaft of the bank 2 tuning valve gummed up by oil vapour and carbon from crankcase ventilation
Bank 2 actuator motor or gear worn, cannot drive the flap into the closed stop
Linkage between actuator and flap shaft detached or broken
End positions not relearned after actuator or manifold replacement

Symptoms

  • Check engine light after two drives (manufacturer-dependent)
  • Noticeably less pulling power in one rpm range
  • Changed intake sound under acceleration

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

P206FP2070P207AP207BP065F

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