Dishwasher builds up stinky water in the bottom between use

The contact on the end off the cycle in the switch is bad you try to clean it or replace the main switch,all the best.

The bottom of your dishwasher should have a big screen in the bottom that covers the drain. The screen and the drain may need cleaning. They can get clogged with grease and stuff over time. I would recommend taking out the screen and cleaning it with soap and water, cleaning out the drain if there is anything in it, and then running the dishwasher with a dishwasher cleaner solution.

water inlet valve isn't closing all the way closed. Need a new one

are you on a well??
do you use bleach in with your whites??
some well water untreated can cause exceptionally stinky machines, especially if no or very little bleach is used during white washing..
usually if you use bleach in with your whites in normal amounts and leave the door open in between uses there should be very little stinky odor or mold growth.
the mold growing on the gasket is a sign of to little bleach or none being used, and/or a really damp environment for the unit to reside in.
they do make several cleaners designed just for stinky front loader washers..
they might help..
i've been using a front loader for 13 years, leave the door ajar between uses, and use bleach in every white load and have had no issues with stinky unless i or someone else doing wash forget and close the door for a couple days, then it gets stinky but goes away after white load with bleach and hot water..
hope this helps,
best of luck,
ttfn

You must have your dishwasher connected directly to the garbage disposal and not through an air gap. What is happening is when you disposal fills with water it is siphoning through the drain hose back to the dishwasher. If you sink has a spare hole on the deck install air gap and run dishwasher drain through air gap first. Otherwise make sure you run Garbage disposal often so that water does not get slowed and build up inside.

I’m happy to help further over the phone at https://www.6ya.com/expert/josh_87ce33216d7b2148

It sounds as if there is something in the bottom part of the dishwasher arm (it sprays the water around the bottom of the dishwasher). I would suggest that you take out the baskets and then remove and clean all of the parts that water comes out of as well as the bottom drain. If this works or does not, I would also suggest that you run an empty load using 1/4 cup vinegar. Hope this helps!

sometimes this happens to me when the garbage disposal has not been run for a while

In many cases the connection were the dishwasher connects to the disposal or sink trap will become stopped up with a build-up from materials from the dishwasher. With the dishwasher turned off disconnect the drain hose from the washer and sink connection. run an object through the connection going to the trap or disposal ( after shutting off power to disposal and clean out build-up. Shouldn't take over 30 min.

Froggman

find out how the dishwasher is set up to drain. Pour water into dishwasher 4 or 5 gallons, see if water disappears. if so, your drain is ran wrong