This may seem like a silly question, but can R2-D2 use his Repair2: Capacity2 ability to repair himself or C-3PO?

1 hour ago, Miles C said:

This may seem like a silly question, but can R2-D2 use his Repair2: Capacity2 ability to repair himself or C-3PO?

Yes, Repair X can be used on vehicles and droid troopers and he is a droid trooper. There is no current rule preventing a unit on using repair on itself.