I've got a du840swkq0 model whirlpool dishwasher that does not drain. The bottom is full of water at the end of the cycle.

I've cleaned all the drainlines, replaced a drain hose on it, checked the disposal and cleaned that too. There was plastic pieces in the drain basket and what looked like caked up residue from dishwash soap or our hard water in the port to the drainline.

got any suggestions for what else to take apart and check?