There are a couple reasons why a dishwasher may not drain but one of the more common reasons is that there is something wrong with your drain hose, here is a DIY way you can replace or repair your drain hose.
*WARNING: Before starting any repair, always make sure that the appliance is completely disconnected from the power source by unplugging it. This tutorial is meant to be a guide and should not be used in place of the installation instructions provided by the manufacturer.
FINDING THE HOSE:
1.) Remove the lower kickplate pannel of your dishwasher, this is usually located below the door. To do this just unscrew the screws either located above or below the kickplate pannel
2.) The drain hose will be connected to the lower spray arm
REPLACING OR REPAIRING YOUR DRAIN HOSE:
1.) Place a pan underneath the hose to catch any potential spills
2.) Disconnect the drain from the pump, to do this pinch the wire clamp with pliers and slide the clamp up the hose
3.) Check your hose to see if it is clogged or has any kinks, if so unclog the hose or fix any kinks
4.) If the hose needs to be replaced (#3 doesn’t apply) replace the hose with a new drain hose and connect one end of the hose to the dishwasher pump and the other end to the sink drain
5.) replace the clamps and put the lower kickplate panel back on