AI Diesel Tech
P2013OBD-IIAFTERTREATMENT

Intake Manifold Runner Control Circuit High (Bank 2)

Common Symptoms

  • Check Engine light illuminated
  • Rough idle or engine stumble
  • Poor acceleration or reduced power
  • Decreased fuel economy
  • Engine hesitation during light throttle
  • Unusual intake manifold noise or hissing

Most Likely Root Causes

  • Faulty intake manifold runner control solenoid or actuator
  • Damaged or corroded wiring to runner control valve
  • Stuck or binding intake manifold runner flaps
  • Failed intake manifold runner control motor
  • Engine control module commanding issue

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Component Location

The intake manifold runner control valve or actuator is mounted on or within the intake manifold assembly on the engine's Bank 2 cylinder head side.

Manufacturer Notes

Some manufacturers use vacuum-operated runner controls while others use electric motors, requiring different diagnostic approaches for this circuit fault.

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