check the wires to the plug for cracks or breaks in the insulation look right at the ends, and bend the wires to see if you see and breaks, if so that could be your problem, you been handling them so one could have broke, or the cracks got to it causing dry wire. bad wires, with throw the same code as a bad sensor.

make sure you got them plugged in the right place, kinda hard to do, but well it happens. lol