scotsman Posted September 18, 2012 Report Share Posted September 18, 2012 SES light just came on. Car is running fine. Link to comment Share on other sites More sharing options...
sts03 Posted September 18, 2012 Report Share Posted September 18, 2012 Try to post the definition of the code. sts03 Link to comment Share on other sites More sharing options...
scotsman Posted September 18, 2012 Author Report Share Posted September 18, 2012 Sorry, I didn't make it clear. I am trying to find what the code means. Link to comment Share on other sites More sharing options...
Frank T Posted September 18, 2012 Report Share Posted September 18, 2012 P0420 means the catalytic convertor has lost its oxygen storage capacity. I'm 99.9% sure that you will need a new CAT. Link to comment Share on other sites More sharing options...
cdgrinci Posted September 19, 2012 Report Share Posted September 19, 2012 Google can be your friend; here is just one link: Chuck '19 CT6, '04 Bravada........but still lusting for that '69 Z-28 Link to comment Share on other sites More sharing options...
scotsman Posted September 19, 2012 Author Report Share Posted September 19, 2012 Thanks for the info, Link to comment Share on other sites More sharing options...
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