Codes P0421 and P0431
08-13-2011, 03:31 PM
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Codes P0421 and P0431
I have 2002 3.0 quattro, CEL is constantly bothering me, OBD codes are P0421 and P0431, instead of replacing the whole Cat system, I am looking for cheaper solution.
Found this product online
http://www.bigdaddiesgarage.com/
and need help locating rear O2 sensors,
please advise guys.
Thank you
Found this product online
http://www.bigdaddiesgarage.com/
and need help locating rear O2 sensors,
please advise guys.
Thank you
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