Does your dishwasher drain completely, or is there always about ... and clear any corrosion with a small screwdriver. Note: Most, but not all, dishwashers have a drain valve that keeps water ...
But if you open the door and see more than a cup or so of water in the bottom of the dishwasher, or if the base of the tub is completely filled with water, the appliance may not be draining properly.