Dishes are not getting clean particularly in the upper rack. The soap dispenser opens properly but the soap was still there. The washer seems to fill properly and it sounds normal. The dishwasher goes through the cycles as normal.

Empty the dishwasher and remove the dish racks so that you can easily locate the drain inside your dishwasher. The drain is under a drain grate, usually at the back of the dishwasher.

Remove the drain grate by either popping the grate out, or by unscrewing the screws holding it in place. Different types of dishwashers will have different options.

Use the soapy water and the toothbrush or scrub brush to clean inside the drain area and the grate.

Rinse the drain area with clean water. Then replace the drain grate.

Pour ½ cup of salt, 1 cup of baking soda and 2 cups of vinegar into the drain (in that order). The mixture will bubble. This will clean the drain and the drain hose.

Wait until the vinegar/baking soda mixture has stopped bubbling. Then pour 1 cup of bleach into your detergent dispenser. Replace the dish racks and run the empty dishwasher on a regular cycle. This will clean the entire machine