Customer Questions and Answers for Dishwasher Circulation Pump And Motor Assembly by Bosch

Hello David, I would first remove everything from the bottom of the unit. The one screen turns about 1/4 of a turn and is lifted out. Then the large screen will lift out. I have found things in there that, once removed, cleared the problem. After you get the sump area cleaned out, if you can trick the door switch and turn the unit onto cancel/drain by pressing the two buttons with dots under them, you can make sure the pump is spinning. Otherwise, I would remove the drain hose from the plumbing under the sink and place it in a bucket or plastic trash can and set the unit to cancel/drain. If none of this produces positive results, replace the pump 00642239.