The drain pump on a dishwasher will always be located at the bottom of the machine, some can be accessed from the front as in this video, others you can removed from under the base of the dishwasher, But the first thing you need to do is drain the water from the inside using a

     The most common in my view is the impeller jamming on the pump normally something small like a piece of chipped china or bit of broken glass, this can be removed with tweezers or pin nose pliers. After removing it should rotate easily by hand… then you should replace the pump cover and the