try all below see if any work
Dave
https://www.ukwhitegoods.co.uk/forums/forum/trade-member-forums/trade-technical-spare-parts-forums/trade-technical-enquiries/843812-bosch-wak28160gb-03
https://www.ukwhitegoods.co.uk/forums/forum/trade-member-forums/trade-technical-spare-parts-forums/trade-technical-enquiries/87150-bosch-wab28261gb-01-e16
Thanks for everyone who got back to me about this enquiry especially all you Siemens engineers out there (yes you know who I am talking about) after some digging I finally found the solution
1.Turn off the machine (dial to 0)
2.Open the door
3.Turn on the machine on first program
4.Close the door
5.Turn off the machine
6.Turn on the machine on the “six-o-clock” program, which is centrifuge
7.Press the “option down” button and keep it pressed (This is the button left of the display)
8.Turn the dial to “seven-o-clock” (empty/pump out program)
9.Release the “option down” button
10.Turn of the machine.
wak machines
from off press and hold start turn knob ONE “not two” clicks left after about 10 seconds an odd display shows, turn off all now seems ok.
wab machines
1) Close the door (The following operational sequence must take place after switching on the appliance)
2) Set program selector to OFF position
Wait for at least 2s
3) Set program selector switch to position 15 while the Start/Pause button is pressed until display is active
4) Release Start/Pause button
All remanent errors will be reset