Multi errorcodes

Asked by GuruL6QKS Apr 26, 2019 at 04:16 PM about the 2006 Chevrolet Cobalt LS Sedan FWD

Question type: Maintenance & Repair

2006 cobalt all of a sudden is displaying 7
error codes: po106, po121, po128, po172,
po420, po455, po506. I replaced brakes and
put gas. Car is still running. Can I do
emissions test or do I have to fix each code?
Has sat for six months

1 Answer
60

Billy answered 5 years ago

Your gas lines are probably rotted through. Have a smoke test done. Check your charcoal canister usually located in the bumper too. Other codes seem to be electrical issues, test your battery and alternator.

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