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Diagnose/P2004
P2004Medium SeverityEngine

Intake Manifold Runner Control Stuck Open (Bank 1)

What This Means

The intake manifold runner control flap on bank 1 is stuck in the open position. These flaps optimize airflow at different engine speeds.

Common Symptoms

  • Check engine light on
  • Reduced performance
  • Emissions concern
  • Power variation at certain RPMs

Common Causes

  • Component failure
  • Carbon buildup
  • Actuator malfunction
  • Wiring damage
  • PCM circuit issue

Estimated Repair Cost

$200 – $800
Parts and labor (varies by vehicle and location)
Difficulty:Moderate

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.