A11 indicates a fault in the wash motor circuit.
This is from the service manual :-
Wash Pump Faulty
Note: Due to the electronics fitted to the wash motor it is not possible to test the
wash pump motor with test equipment.Pump Motor:
No circuit has been detected for 20 seconds.
- Check the wiring and data control lead connections to the Wash Pump Motor.
- Check the wiring between the Wash Pump Motor and Power Module.
- Replace the module.
If the module (main control board) is replaced it has to be programmed to the appliance once fitted.
This needs special equipment I'm afraid.
Sorry, not a simple fix and not an easy diy one.
Before doing anything else, unplug the appliance for 10 minutes.
This is long enough for any stored memory to erase.
Plug in again, try the machine.
If still the same, it suggests a faulty motor and/or control board.
Hope this helps
Let me know how it goes