Code 43 on 1994 Blazer

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08-09-2006, 10:18 AM

firststep

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Join Date: Aug 2006

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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

08-12-2006, 05:10 PM

robert8868

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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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