Sometimes work , sometimes not - dishwasher Elextrolux esl65070

Hello everybody!
I have from 1 year problem wit my dishwasher Elextrolux esl65070 .
The problem is - do not want to stop after compleat drain the water. Stop but after 1-2 min with fault 2 times flashing the led.
If I restarted sometimes start and finish compleatly , sometimes tha same , the pomp works and stop with error.
I ordered a new pressure switch, but the same...Any ideas? Thanks in advance!
Josko

Go for the hose and clean exactly where it goes. The hydrostatic chamber will definitely be clogged. It depends on how the leftovers are arranged, sometimes it works and not.