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Re: E4491/E4423 programming error
Posted to Technical Discussion Forum on 5/3/2021 5 Replies

Do you have any codes?

Are you loosing keep alive power?

Are your grounds good?

I would suspect that it is the ECM, try to call Flagshit1 and see if they offer any support. You are probably going to have to get a new OE ECM. Login to read more.

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