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ooohmatron · 05-02-2017, 04:25 PM

I recently bought a 2001 Boxster S with 35K miles. Looks immaculate. The CEL keeps coming on reading an O2 sensor fault. 2 O2 sensors have been replaced, a split vacuum hose replaced, the mass air flow replaced and still the light keeps coming on after about 250 miles post reset. Suggestions?

05-02-2017, 04:25 PM	#1
ooohmatron Registered User Join Date: May 2017 Location: Chicago Posts: 1	Noob Boxster Owner I recently bought a 2001 Boxster S with 35K miles. Looks immaculate. The CEL keeps coming on reading an O2 sensor fault. 2 O2 sensors have been replaced, a split vacuum hose replaced, the mass air flow replaced and still the light keeps coming on after about 250 miles post reset. Suggestions?