Check Engine Light Due to Internal Vacuum Leak at Oil Seperator on Porsche Boxster

Various fuel trim and oxygen sensor limit fault codes can be traced to an internal vacuum leak at the oil separator.

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Average mileage: 43,500 (43,500–43,500)
14 model years affected: 1997, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
15 people reported this problem
1 person shared problem details
Oil separator failed leading to oil in the 02 sensor caused check engine light to illuminate
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