Chosen Solution

Over the last few days, my whirlpool dishwasher wdt790saym3 won’t drain completely. Dishes are clean but I’m left with an inch of gray water in the bottom. Need help troubleshooting but most sites are selling me parts.

No expert on these rascals but the first thing I personally would check is the area under the bottom sprayer for old food bits, labels and the such to make sure the discharge area isn’t blocked. Maybe malfunctioning float switch, electronics control board or discharge pump should be taken into consideration. Youtube may have some further tips?