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Air intakeSeverity Medium: diagnose soon

P2008Intake Manifold Runner Control Circuit/Open (Bank 1)

What it means

The ECU sees an open circuit in the intake manifold runner (or swirl flap) control.

Symptoms

  • Loss of power at low or high rpm
  • Rough idle
  • Rattling flaps in the intake

Common causes

  • Flaps stuck with carbon or broken
  • Faulty runner actuator or vacuum supply
  • Faulty position sensor
  • Wiring fault

What to check first

  1. Command the runners and watch the position feedback
  2. Check the vacuum supply on vacuum actuators
  3. Inspect the flaps and linkage for carbon and breakage
Can I drive with P2008? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

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P2008: questions and answers

What does P2008 mean?

P2008: Intake Manifold Runner Control Circuit/Open (Bank 1). The ECU sees an open circuit in the intake manifold runner (or swirl flap) control.

What are the symptoms of P2008?

Loss of power at low or high rpm. Rough idle. Rattling flaps in the intake.

What causes P2008?

Flaps stuck with carbon or broken. Faulty runner actuator or vacuum supply. Faulty position sensor. Wiring fault.

How do you diagnose P2008?

1. Command the runners and watch the position feedback 2. Check the vacuum supply on vacuum actuators 3. Inspect the flaps and linkage for carbon and breakage

Can I drive with P2008?

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.