If you do not have soft water in your house then you filter is probably not flowing well due to hard water deposits.
This was taken from my dishwasher that broke. I have had Rayne Soft Water for the entire life of the dishwasher.
Only $10 good condition and perfectly usable. New ones are $20+
Bosch 00615079 Dishwasher Micro Filter should be cleaned regularly
Bosch Dishwasher Micro Filter filters out food debris preventing it from clogging the drain