For Shop Owners

P2004 FORD - Intake Manifold Runner Control Stuck Open Bank 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Intake Manifold Runner Control (IMRC) monitor signal shorted to power
  • Faulty Intake Manifold Runner Control (IMRC) actuator
  • Faulty Intake Manifold Runner Control (IMRC) solenoid
  • Damage Powertrain Control Module (PCM)
  • Blocked vacuum hoses
What does this mean?

Tech notes

There is a factory service bulletin for the following Ford Models:

2005-2006 Mustang
2006 Explorer
2007 Explorer Sport Trac

2011 Ford Ranger w/2.3L

Ford Windstar, Ford Freestar

2006 Ford F150

User Submitted Video
What does this mean?

When is the code detected?

The P2004 is set when the Intake Manifold Runner Control (IMRC) is commanded closed by the Powertrain Control Module (PCM), but the IMRC indicates open.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2004 FORD Description

The Intake Manifold Runner Control (IMRC) is an electrically actuated system consisting of a motorized actuator with an attaching linkage for each housing on each bank. The linkage attaches to the housing butterfly plate levers. Each IMRC housing is an aluminum casting with two intake air passages for each cylinder. One passage is always open and the other is opened and closed with a butterfly valve plate. The housing uses a return spring to hold the plates closed. The motorized actuator houses internal switches to provide feedback to the Powertrain Control Module (PCM), indicating linkage and plate position. Under about 3000 rpm the vacuum solenoid will be energized. This will allow manifold vacuum to be applied and the butterfly valve plates to stay closed. Above approximately 3000 rpm, the vacuum solenoid will be de-energized. This will allow vacuum to vent from the actuator and the butterfly valve plates to open.
OBDII Code P2004 Ford - Intake Manifold Runner Control Stuck Open Bank 1 -

P2004 FORD Information for specific Ford models

Need more help?

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P2004 FORD Comments

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Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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