Frigidaire PLD4555RFC Dishwasher floods
Not real familiar with the newer ones. When you say you cleaned the filter, do you mean the strainer at the bottom? If not that is where I would start. You'd be surprised what you can find there. And if you can get the strainer out, check the fins under it that cuts stuff up. Sorry, I cannot think of the name of that part.
Being that new, I the float valve ( shuts the water off a predetermined level) and the inlet valve should be okay. In the older ones, these parts more or less snap in and out, might have to twist and pull on them. Be careful and do not void your warranty. Maybe you can schedule for after work?
I have found pieces of plastic forks, pieces of cig packs, food particles, etc. in the strainers.