I open this question to ask if you, too, have tried repairing the AdBlue pump and level on e.g. Peugeot vehicles where changing the complete servos NEW costs even more than €1,100 and they want yours back with a €100 deposit.
From what I understand for the pressure error you have to do something about it by replacing the pump, at the moment we have not yet done this but I know several do. Can you find spare parts not from the network? And what about the level?