Hi @david96040
What is the full model number of the dishwasher?
Reason for asking is that there are 8 WDF520PADM model variants i.e. WDF520PADM0, WDF520PADM2, WDF520PADM3, WDF520PADM5 → WDF520PADM9 and some have more parts than others.
A 4:3 error code indicates a wash motor problem.
As you know the error codes you most probably already have the [document|41452|tech sheet] for the dishwasher. If not go to p.4 to view the ''Wash/Rinse circuit'' showing the operate path for the wash motor and check if all the accessible connections shown in the circuit are secure etc
A 1:2 error code indicates a control board issue i.e. software problem
If a power reset fixes the problem but it comes back then you may have to replace the control board. Knowing the exact model variant will help to find the correct control board for the model.