Bosch dishwashers are top of the line dishwashers, occasionally the dishwasher may fault out with an error code. The most common Bosch dishwasher error code is 2h, this is the heating fault code. If you are “handy” this is a simple DIY dishwasher repair.
The 2h indicates the water temperature has not risen to the appropriate temperature, when the water reaches the set temperature the thermostat relays the information and the dishwasher will commence washing. In the case the dishwasher gives this error code the control board would be the prime suspect, often the solder joint the backside of the relay will burn.
I have heard both good and bad reports on soldering the joint and not replacing the board. Personally I have only attempted this several times, in each case the contact melted again within 30 days, around 45 miles from town on both service calls I opted for the solder repair job. Replacing the control is normal what I do and I would recommend replacing the control and not wasting your time on the solder job.
If you are wondering where this board is and how do I get to it, here are the answers.
-Remove screws around inner door liner
-Unplug the wires on control (Take a picture for later)
-Push control release tabs
With the wires off the dishwasher main control board the control panel will pivot far enough to push the tabs in, these tabs are on the bottom side of the control board. The three small tabs lock the main control to the metal housing inside the plastic panel, the metal frame will come out if the tabs can not be located. To remove the metal frame push in on the plastic tabs around the control panel, the start switch wires and ground wire will need to be disconnected in order to remove the housing.
With the new board insert the front top first then rotate and push the back side in until the tabs lock to the housing, reconnect the housing to the plastic and button the dishwasher up.