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Re: The dreaded code 42, 1988 2.8 codeW
Posted to Technical Discussion Forum on 4/27/2001 8 Replies

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If the bypass wire isn't going to 5 volts then EST shouldn't be a five volt square wave as you showed in this image, it should be a 500mv square wave. I think the module is bad and isn't pulling the ... Login to read more.

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