Hi,
After changing the control unit the problem stayed..!!!!!
What I did in the end was to put as much boiling water into the machine as I could get and left it for an hour....
Then put it onto a cycle and hey presto...!
Hope this works for you but the impeller jug I never found so...
Hi have the same issue with my BOSCH Dishwasher, Model SGS53C02GB...
Is the Impeller Jug Sensor a typical fault that causes this issue...?
How do you get to this part...?