Water was not shutting off causing water to come out of the overflow tube. The "wash" button would sometimes blink and the washer would start to run and then turn off. Replaced the flood switch thinking that it was not triggering the shutoff valve. This stopped the blinking "wash" button, but it still flooded. Then replaced the shutoff valve and that fixed it. May not have needed the flood switch.
Shutoff valve was a little bit different than the original, but it installed quickly and easily with no problems. Had to turn the washer on its side to access the bottom for replacement. The only small problem was reaching the screws that hold the valve to the washer. They are recessed and I couldn't get to them with my nut driver. Had to use an open-end wrench. Most time was taken swapping the fittings from the old valve to the new one. Took a few minutes to clean them off and reattach.
Helpful hint: There is a maintenance mode that you can use to test various functions without just running the wash cycle. I found the instructions tucked into the parts under the washer.