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Discussion Starter · #1 ·
I got a code P0420 on my car yesterday (scanned at Autozone). I guess it has something to do with the cat. BUT, I have an RT cat, bought it used, but it looked really good before the install. Could it be the O2 sensors just going bad?

The car drives fine, no hesitation or what not. I disconnected the battery to undo the code, to see if the code will come back. So far, it hasn't (knocking on wood).

Help guys! I don't like CELs.

marc
 
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