I read that other people had similar problems with their older Bosch units and that most of the time it was the Control Module that caused the problem. I ordered the replacement module from APP it arrived promptly as promised. I did have a problem with the new module plastic case which came with one of the plastic tabs that the control panel buttons engages with being broken but I was easily able to swap the circuit boards from the new module in the case for the old module. The diagrams on the forum were very helpful. The whole process including searching for dropped door panel screws took 40 minutes. The thing that took the longest was getting the door panel back on and aligned properly so the screw holes would align. The dishwasher worked flawlessly when I tested after putting the power back on.