I don't have the same RV as you do, but our codes are both on one of the kitchen cabinet doors and on the wall of the rear closet. You have to move the clothes to find it. They were looking for a wood surface to glue it to. Have fun looking.
Bill
Nodwell RN110 out moose hunting. 4-53 Detroit, Clark 5 spd, 40" wide tracks, 10:00x20 tires, 16,000# capacity, 22,000# weight. You know the mud is getting deep when it's coming in the doors.