SES Code Help
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 159
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SES Code Help Ok, I went to Autozone and had my car scanned and I got a P0420 and a P0430. There causes were very very vague... Anyone help me narrow this down? I don't have a tune, and still have my cats and 02 sensors. Its a 00 SS.... Thanks in advance
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
They're cat inefficiency codes - both banks. You can look them up at gearchatter.com for your year, usually means the cats are bad. Lots of posts for those codes, GM extended the warranty on them to 10yrs/120K on the 00-02 LS1 F cars. If they cleared them for you see if they return.
