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01-30-2005, 05:36 PM | #1 |
Scooby Newbie
Member#: 33390
Join Date: Feb 2003
Location: A Spider Hole
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Question about CATs and P0420 CEL
The P0420 CEL seems pretty common. In the CEL thread some people thought it could be an O2 sensor problem and not always a bad CAT.
Has P0420 ever been the result of a bad O2 sensor, or is my CAT the problem? I've had a turboback with a hi-flow cat in the DP (on an '02 WRX) for close to 30K miles and just got this CEL. Do CATs go bad that fast? |
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