SES Code Help
03-30-2009, 02:11 PM
#1
On The Tree
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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
03-30-2009, 02:31 PM
#2
TECH Senior Member
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.