Hi,Welcome to Just Answer, My name isXXXXX will be helping you with your appliance issue today.
Can you take the hose off the garbage disposal under the sink and put it in a bucket and try draining the machine like that and tell me whether the water comes out of the machine at all?
Sorry to take so long. I removed 506 and reached down into 508 but did not find anything other than a little water. How risky would it be for me to pull out the dishwasher? I am a female and would hate to ruin my kitchen floor, etc.