From Ross-Tech Wiki

18711/P2279/008825 - Leak in Air Intake System

Possible Symptoms

  • Malfunction Indicator Lamp (MIL) active

Possible Causes

  • Vacuum Leak
  • Intake Manifold Runner Position out of Specification
  • Faulty Positive Crankcase Ventilation (PCV) System or Heating Element (N79)

Possible Solutions

  • Check Intake System for Leaks
  • Check Intake Manifold Runner
  • Check (PCV) System and / or Heating Element if applicable

Special Notes

  • When found in the NAR 2.0T (BPY) check RVUTB: 01-09-03 or 2018919 for updated Crankcase Breather Valve
    • If the breather valve is faulty, full engine vacuum is typically found when removing the oil cap at idle.