MHWE200 -Maytag 2000 series in dark gray. F3E2 code, I have unplugged. Emptied drain. Checked that all wires are secure. See no wire harness damage. Changed temp sensor. Nothing will clear this code. It goes to the error code before the water even begins to run. Why???

If you are certain the wiring is good and you installed a brand new temp sensor and still get the error then the board is reporting a false error and the board is bad.