Problem: It turned out there is a little black piece of plastic that sticks out above where the door locks. The door pushes the plastic rod in, the tells the unit the door is closed. For me, the plastic piece was broken so the unit thought the door was open, when in fact it had been closed. I tried to take apart the door switch assembly to see if I could fix this part, but these things are not meant to be taken apart or repaired. I could not get the unit to go back together correctly.
The Fix: I ordered a new "Door Switch Assembly." To replace this you have to remove the metal ring holding the washer boot on (this is annoying to get back on, but you can do it) with a flat head, pull the washer boot back on that side, then unscrew the 3 screws holding it in, slide the assembly up out of the plastic bracket holding it, and un-clip the 3 wiring harnesses. Then its out. Install is the revers of removal.
There is a repair video for this exact part its page. Check it out.