Check the drain air gap or in-sink disposal if the dishwasher is not draining well.
The drain air gap and disposal are external plumbing devices that are not part of the dishwasher.
The warranty provided with the dishwasher does not cover service costs directly associated with the cleaning or repair of the external drain air gap and disposal.
Turn off the dishwasher.
Remove the air gap cover and the plastic cap underneath it.

Clean out any debris with a toothpick or brush.

Replace the plastic cap and air gap cover.
