Might be too far back to remember but I have just come across with the same fault for same dishwasher, the original fault was problem with filling and not starting up/ drain and fill loop.
replaced pressure switch sensor – this one does not have a hose as it is attached to the sump, calibrated the water level by using few drops of rinse aid and water up to the sensor inlet to let it stand in the sump for 10 mins. Dishwasher worked fine.
Now it is overfilling? If this what you are saying as above about the board being burnt out, what would be the cause of it or just bad design?