Question about 2002 Volkswagen Beetle Turbo S
BBCatalyst system efficiency below threshold bank 1 Explanation BBFaulty
catalytic converter Probable Cause
BB1- Rich Air/Fuel Ratio
BB2- Air Leak near rear H02S
BB3- Faulty fuel control H02S
Sounds like a bad oxygen sensor. Consult a mechanic for troubleshooting.
Posted on Jul 14, 2009
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Posted on Jan 02, 2017
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