I have a Frigidaire dishwasher model FDBB1940DBO

The water is not draining completely. The bottom is full of murky white water.

I have pulled the screens out and they are clean. Is there an easy way to check the hose for obstructions without pulling the unit out to disconnect the hose?

Thanks!

my frigdaire dishwasher i have check everthing an the water just dose want to drain , the dish washer works sounds ok like when first got it but the water just not drain , i start here a like buzz sound when it turn on now , an that when it should drain when i start here that noise , its a small dishwasher apartment size , an i have dont know where to go from here , anybody no what i need to do next to try to make it drain

model number is 252rbb2

there as been no change in the house plumbing , the dishwash is hook up to waste disposer so i checked that to make sure that was clean , i check drain hose mare sure there was no kinked it just lay on floor an run up to the wall an in to disposer. so i took the hose off to make sure that was clear ,an it was i pulled the dishwasher out from wall took it apart an check to see if anything was blocking it so i clean everthing out and there was nothing blocking it so i put make togethere an still will not drain everthing seem to work fine it truns on an go's though it like it is washing but it just as water sitting there because it will not drain out

This dishwasher has two separate pumps, one for the wash/rinse cycles and another to drain the unit. The wash/rinse cycles operation is fine, but the unit will not drain. I removed the drain pump and connected it to a separate 120 volt power source: it operates flawlessly.

The dishwasher is less than two years old, and has the dial/timer type control on the front panel. If I cycle the unit manually, the unit hums loudly when it is time for the drain cycle to empty the dishwasher. Therefore, I assume the drain pump is getting power at that time.

The drain hose is connected to a newly installed garbage disposal. The hose itself is not blocked, and the inlet to the disposal is clear.

Could the dishwasher outlet pipe that connects to the drain pump inlet be completely blocked - causing this problem? That's the only thing I can think of that I have not checked. Thanks in advance for any advice you can offer.

Thanks for the prompt response. I found the problem yesterday. While the drain pump operates properly, there was a problem with the main pump. When I removed it for inspection, I found that the plastic ring on the end had come out of the slot on the mating part, and was completely blocking water flow out of the dishwasher. It does not appear damaged and I did not see any cracks, either; it simply became dislodged from it's normal position. But, I would still like to replace it. Do you know if this ring can be purchased separately? Replacing the pump itself is too expensive: around $150.00. A whole new dishwasher is only $189.00 on sale her in Ohio.