Bosch Dishwasher?

I have recently had a drainage problem in the kitchen waste pipe which resulted in water flowing out through the dishwasher. The lowest point for a water exist. However although the drain problem is now solved, the the Bosch dishwaher seems to be stuck in a flood mode. The drain pump stays on will not switch to wash mode. I have removed the strainer and bottom plate, to look for water. Removed a plastic cover which shields a propeller, i believe that directs water into a little hole. I closed the dishwasher door and hit the rinse cycle, but it is still stuck in drain mode and never switches to wash mode. Reset has obviously already been attempted but the pump keeps on going!
Does anyone have any advice?