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Get a 0 reading from the obd2 scanner. Replaced and still have the same issue. Checked the wires in for voltage and the one that is to be system voltage was only reading 3v. Looking for what direction should go from here.
 

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Have you checked for ground. It is possible that the voltage is fine and the ground is being lost. I’d have to check for voltage specs though as I don’t know off hand what they’re supposed to be.
 
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