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2010-2012 SUBARU LEGACY

3.6L H6AWDCVTgas
50 active safety recalls on this vehicle — view recalls
Repairs0Labor504Torque3914Fluid9DTC900Battery0Maintenance0Recalls50
P2004moderate severityPowertrain

Intake Manifold Runner Control Stuck Open Bank 1

on 2010-2012 Subaru Legacy 3.6L H6 · AWD

What this code means

The variable intake manifold runner flaps on bank 1 are stuck in the open position.

Symptoms

  • Reduced low-RPM torque
  • Check engine light
  • Rough idle
  • Poor fuel economy

Common causes

  • Broken runner flap linkage
  • Failed actuator motor
  • Carbon buildup on flaps
  • Vacuum leak

Diagnostic steps

  1. Inspect intake manifold runner mechanism
  2. Test actuator motor
  3. Check vacuum lines if applicable

Repair notes

Clean carbon deposits from runner flaps. Replace actuator motor or linkage as needed.

Other Powertrain codes on this vehicle

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