This is the washing machine section...however that said there could be a number of causes. If you have checked for possible water supply issues then it could be a pump fault (blocked or defective). It could also be a faulty level contol pressostat or a solonoid valve in the aquastop. Before you start digging around inside the machine first check that the inline filter in the supply hose is not clogged. Turn off the water supply & unscrew the aquastop, look inside the brass nut & you'll see the filter below the sealing washer. Remove the washer & pull out the filter with a pair of pointed nosed pliers. Give it a good clean if it is blocked with particles.
If that is ok then its likely to be a pump, aquastop, or pressostat problem. Miele spares are expensive so you need to be sure where the fault lies before going shopping for parts. If you don't feel competent to faultfind it may be better to get qualified assistance. Identifying faulty components can be difficult + the machine needs to be placed on its back & the bottom has to be removed to gain access. Good luck.
Mike
November 2009