Check engine light error code P0420 - 35 - 00 - - Need help!!! on 2003 Volkswagen Jetta

Hi Greetings I am getting the following error code when I analyze my check engine light: 16804 - Catalyst System: Bank 1: Efficiency Below Threshold P0420 - 35-00 - - I checked some VW forums and it seems to be a catalytic converter issue. Something to do with the O2 sensors in the front and back. Could anyone give me an idea on what needs to be done and how much it would cost before I take it to a mechanic? I appreciate your response

by in Portsmouth, NH on April 25, 2010
2 answers
ANSWER by on April 25, 2010
Be sure to check out this article on the P0420 code first:
ANSWER by on September 30, 2010
po420 code on my 2004 audi a4

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