Drain A Dishwasher Patched — How To

: Because dishwashers often share a drain line with the sink, a backup in the disposal can prevent the dishwasher from emptying. Run the disposal for 30 seconds to clear potential blockages.

: If your sink has a small chrome cylinder (air gap) next to the faucet, remove the cap and check for food debris that might be causing a backup. Step-by-Step Manual Draining how to drain a dishwasher

That small chrome/plastic cylinder next to your faucet? Remove its cap. Clean out any gunk. Then run a drain cycle. : Because dishwashers often share a drain line