You are my hero! I had not thought of leaving the power on. After disconnecting and reconnecting at the PCB, the error was still flashing, but I could turn the dishwasher off. It's running a cycle right now, and so far, is a complete success! Thanks for saving the day and sparing me additional scorn from my wife
I went ahead and ordered that control panel, so I should be able to get this thing 100% functional with the power button after that. Disassembling this thing is not my favorite pastime, so if it dies again, I think I'll be going shopping...
Thanks again for the help and updated progress.