bosch classix dishwasher wont drain?

hi, our bosch classix dishwasher has a pool of water collecting after a cycle, and wont drain. This is probably due to food going down the filter and creating a blockage, so the water backs up. Weve cleaned out the filters, but dont want to take off the connecting pipe incase we cant get it back on. is this a job for a plumber, or even someone like dynarod, with a high pressure hose? cheers