Fuel and air

P2005 — Intake Manifold Runner Control Stuck Open (Bank 2)

Severity: medium Drive with care, to a shop

What P2005 means

Many engines use flaps in the intake manifold (runner control) that change the length or opening of the intake passages depending on engine speed and load. The ECU commands an actuator and compares the commanded position with feedback from a position sensor. P2005 is set when the bank 2 flaps stay open when they should be closed, or the position does not match the command.

Symptoms

  • Check Engine light on
  • Loss of torque, especially at low rpm
  • Rough idle
  • Sluggish acceleration
  • Possibly higher fuel consumption

Possible causes

  1. Carbon-clogged runner flaps (common on diesels)
  2. Failed bank 2 actuator or control solenoid
  3. Vacuum leak in the actuator's vacuum line
  4. Damaged wiring or poor connector contact
  5. Mechanical failure such as a broken lever, link or flap shaft
  6. Faulty flap position sensor

How to diagnose

  1. Read all codes and freeze frame data, clear the code and see if it returns
  2. Inspect the bank 2 actuator connector and harness for damage, corrosion and oil
  3. Check vacuum hoses and lines for cracks, kinks and leaks
  4. Use a scan tool to command the actuator and watch whether the reported position changes
  5. Test power, ground and signal at the position sensor with a multimeter
  6. Remove the intake ducting and inspect the flaps for carbon, binding and play
  7. Test the solenoid and vacuum actuator for proper operation

Common fixes

  • Clean carbon from the manifold and flaps
  • Replace the actuator or control solenoid
  • Repair the vacuum leak
  • Repair the wiring harness or connector
  • Replace the manifold or flap assembly if mechanically damaged

Questions and answers

What does code P2005 mean?

The ECU has detected that the bank 2 intake manifold runner flaps are stuck open. The usual culprits are carbon buildup, the actuator or the vacuum system.

Can I drive with P2005?

For a short time and with care, yes, but expect reduced power. Do not put off the repair, because broken flaps can damage the engine.

Will cleaning the intake manifold fix it?

If carbon is the cause, often yes. Check the actuator, wiring and vacuum lines first to be sure.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.