check engine stays on on 1996 Volkswagen Passat

oxygen sensor replaced and was sent to vw dealer for connection

by in Lancaster, PA on November 23, 2009
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3 answers
ANSWER by , November 23, 2009
What codes do you have now?
ANSWER by , September 25, 2010
why did you have to do that?
ANSWER by , December 15, 2010
My "check engine light" keeps going on and off. German Automotive repair shop said it needs the entire catalytic converter replaced. But it seems to run fine. And the light is now off. WTF?