One of the most common reasons your dishwasher won’t drain correctly is on account of a blockage in the drain path. This drain line, or drain hose, moves water out of the dishwasher tub after a cycle ends. If the drain line is clogged, water isn’t able to flow out of the tub. Reach the Stallion Heating Plumbing Air Conditioning pros at 215-278-9690 for plumbing services in Philadelphia.