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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 P0455: Fuel Tank Ventilation System (Major Leak) - Signal Implausible >> Diagnosis Procedure >> Check Tank Cap

Check Tank Cap

  1. Check whether the tank cap is present.
  2. Check whether the tank cap is correctly screwed on.