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P1554 – Intake Manifold Runner Control Circuit Low (Bank 2)

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Symptoms

  • Hesitation
  • Reduced power

Causes

  • Short to ground
  • Damaged wiring
  • Faulty actuator

Diagnosis

  • Measure voltage
  • Inspect wiring
  • Check connector

Repair

  • Repair wiring
  • Replace actuator
  • Clean connector
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