The dishwasher would drain once during the cycle, typically during the earlier part of the cycle, but would not drain at the end. What I was left with was a basin full of dirty water. Troubleshot initially by flushing the drain hose, pulling the catches, etc., with short term success, but the problem came back. I read some reviews on this site and diagnosed the problem to be the drain pump assembly, a partially clogged drain hose, and a partially warped flapper valve. Replace all 3 parts last night in about 30 minutes, and the dishwasher is functioning just like it should again, with a nice healthy and strong drain.