Scrape, Don't Rinse: You don't need to pre-wash dishes, but you must scrape off large chunks of food.
Once your dishwasher is draining properly, a few simple habits can prevent the problem from returning. how to unclog a dishwasher drain
Clear the Garbage Disposal: Most dishwashers drain through the same pipe as your kitchen sink. If your disposal is full of food, the dishwasher cannot drain. Run the disposal with plenty of water to ensure the path is clear. Scrape, Don't Rinse: You don't need to pre-wash