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: 93,640 (43,500–127,421)
14 model years affected: 1997, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
17 people reported this problem
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Viewing 1 - 3 of 3 problem details
1999 Porsche Boxster 127,421 mi,
O2 and check valve lights on but no smokw at all..but I hear vac leak at oil separator..Im going to check and follow up
2002 Porsche Boxster 110,000 mi,
a lot white smoke coming up.
2003 Porsche Boxster 43,500 mi,
Oil separator failed leading to oil in the 02 sensor caused check engine light to illuminate