Customer Questions and Answers for Control Module by Bosch

Hello Leah. Bosch dishwasher with the code 2H displayed in the digital read out will more than likely need the main control replaced. The 2H means there is a heating issue, you need a multimeter to diagnose properly but here is a good sign the board is bad. Remove the dishwashers control panel, do so by removing the screws around the door, Bosch uses torq head screws on most of their appliances. With the screws removed the control panel will release and fall forward, you will need to UN clip the control board from the plastic housing. On the bottom of the control there are several locking tabs, depressing them with a small screwdriver will release the board from the housing. With the dishwasher control removed you can now open the plastic housing, the heater relay will be burnt, look for the missing or black solder mark on the board. If so, replace the control board in the unit.