Question about 2003 Audi A6
I am told these codes indicate cats need to be replaced. I find it hard to believe both would go bad at same time. Any advice?
Check for air leak on vacuum hoses, and exhaust plus test health of O2 sensors b4 doing the CAT b/c CAT are the most expensive.
Posted on Oct 10, 2010
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Posted on Jan 02, 2017
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