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firststep

08-09-2006 10:18 AM

Code 43 on 1994 Blazer

I have a 1994 Chevy Blazer with the service engine soon light on. It is running OK both Code 43 comes up and I can't find out why. Can someone hrlp me with Code 43?
Thank You

robert8868

08-12-2006 05:10 PM

RE: Code 43 on 1994 Blazer

hi a code 43 means either low voltage at ECM terminal L ,only (carbureted models), or this, knock sensor circuit faulty, good luck,:)

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