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 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? | 
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 What are you using to read the codes? | 
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 What is the actual code? | 
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