Rinse it under hot water. Use a soft brush to scrub off grease and food particles. Soak in warm soapy water if needed.
Scoop out water from the bottom of the dishwasher using a cup. A wet/dry vacuum works best for quick removal. clean drain dishwasher
Most dishwashers have a cylindrical or flat filter at the bottom. Twist it counterclockwise and lift it out. Check your manual for exact location. Rinse it under hot water
Spin the impeller (small fan-like piece) by hand. It should turn freely. Remove any glass shards or hard objects. clean drain dishwasher
Replace the filter and rack. Run a short hot-water cycle with no detergent to flush out loosened debris.