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With codes immediately coming back for sensors, sound likes they left some wires disconnected or pinched/broke the wires during removal/install. Usually "circuit high" indicates an short to power, or open in the ground circuit. They could look at those sensors data and see if they are responding at all and go from there. If all else fails, you could do a "cap" discharge. You just disconnect both battery terminals and put a jumper wire across them causing hard reset on modules. Hope this helps at all!
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