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Home >> Porsche >> 2000 >> Boxster Base, Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> DME 7.2 - 911 CARRERA & BOXSTER >> DTC P1411: Secondary Air Injection System, Bank 2 - Below Limit >> Diagnosis Procedure >> Check Air Change-Over Valve And Air Supply Lines

Check Air Change-Over Valve And Air Supply Lines

  1. Run engine briefly to produce vacuum.
  2. Trigger AIR pump with Porsche System Tester 2.
  3. Remove vacuum hose of air change-over valve.

    If vacuum is present at the air change-over valve, check air supply from the AIR pump to the change-over valve up to the air supply line to the cylinder heads.

    Check function of air change-over valve.

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