This might be totally unconnected to your problem but I have a BDW15 dishwasher that did that. It was found that the rubber doorseal was knocked out of position when pushing in the bottom basket and let water into the door. Let it dry out then push rubber door seal seal back in place. I had to trim mine and gentally knock the metal it fitted into to provide a tighter seal as it had stretched over time and became loose. Hope this helps?
Malc, August 2011
