A dishwasher that won't drain leaves a shallow pool sitting in the tub, but the blockage causing it is usually easy to get at.
Clean the Filter and Sump
Food particles collect in the sump area and block the path water needs to drain out.
Fix: Scoop out any visible debris and rinse the filter located under the lower spray arm.
Check the Drain Hose and Disposal
A kinked hose, or a newly installed garbage disposal with its knockout plug still in place, will both stop drainage cold.
Fix: Straighten out the hose, and if the disposal was just installed, knock out that plug.
Clear the Air Gap
The small cylinder mounted on the sink can clog and send water backing up into the dishwasher tub.
Fix: Twist off the cap and clear out whatever debris has collected inside.
Not sure what's wrong? Book online — every visit includes a free diagnosis.