18438/P2006/008198

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18438/P2006/008198 - Intake Manifold Runner Control Stuck Closed, Bank 1

Possible Symptoms

  • Malfunction Indicator Light (MIL) ON
  • Reduction of power at higher RPMs

Possible Causes

  • Vacuum leak
  • Faulty Intake Manifold Runner Position Sensor1 (G336)
  • Intake Manifold Runner binding or sticking

Possible Solutions

  • Replace failed vacuum line
  • Check Intake Manifold Runner Position Sensor 1 (G336) and wiring, see repair manual.

Special Notes

  • When found in 2005 - 2008 Audi A4 and A6 with 3.2L FSI engines, please see TSB 2019485/1 or 24-08-76 which discusses faulty vacuum hoses to the IMT (Intake Manifold Tuning) valve and IMR (Intake Manifold Runners).
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