I'm assuming the model number is XXXXX and not AVM.
There are 10 variations of this appliance so if you decide to repair it yourself you will need the number beginning 85 to identify your machine for parts.
The error code would suggest that the pcb in the bottom of the machine is faulty.
To replace this you would have to take the front panel off the appliance.
To do this, open the door, take the wire ring seal retainer out, peel the seal off the front panel, take the screws out holding the door lock in place, remove the plinth cover, take out the 3 screws/bolts revealed, push the front panel down a little and lift it off.
You can now see the pcb at the bottom right of the cabinet.
Rebuilding is the reverse of removal.
Bear in mind, if you do the job yourself, you have to decide if the board fault has been caused by a motor fault, you have to check the wiring between the motor controller and motor for faults and you will not get a warranty on any parts you fit yourself, so if something should go wrong or you miss a fault the suppliers won't be interested.
With the very high prices charged for these parts. PCB example is here (this is one of the 10 versions) I would suggest considering replacement rather than repair unless you registered the machine from new for the 8 or 10 year parts warranty (there was a charge for this). If you did register it you would have to pay the labour charge only and this is fixed for the whole repair, not per visit.
Hope this helps