GE dishwasher fix for blinking light and won't start

I was having an issue where my dishwasher wouldn't start, the start light would just blink and blink. I found a fix online where someone said lifting their door up would allow washer to start up. I tried that and sure enough it worked, but it wasn't a permanent fix.

Called GE, since unit was brand new and under warranty. Technician came out and fixed problem in seconds.

Turns out, when installed, the installer overtightened the dishwasher, causing the top of the unit to get pulled up slightly and no longer in-alignment with the door when closed. Fix it to pull down on the top of the unit where the sensor is to get the sensor back in alignment. You can also shim down the middle to help push it back down. The technician recommended using paint sticks or shims to wedge the top frame down.

If you want to test if this is your problem, you can try closing door and lifting up on door, then pressing start button. If dishwasher starts, that means door sensor wasn't aligning properly and this fix above will work. If lifting the door doesn't help, then this may not be your problem.

Hope this helps!