Re: Bosch Dishwasher SGS43C12GB/08 Fills up then stops
If we assume that the pump is blocked, your only course of action is to remove the pump motor to access the pump chamber.
You will need to remove the door outer panel, the kick board and the tray under the machine. The pump motor is in the front left corner and is a twist-fit – you will need to overcome a locking barb first, then it will twist a 1/4 turn and pull away.
Leaning the machine back to a good angle will give you reasonable access from the front and underneath.
Power off first, of course.
Penguin45.