DTC B1602-00: CAN Error: General Description
WARNING: This page is about a different car, the 2017 Hyundai Santa Fe Sport. However, it is still accessible from the selected car via links, so may be relevant.
Body electrical system is consist of 5 Units BCM (Body Control Module), DDM (Drive Door Module), SJB (Smart Junction Box), SMK (Smart Key Control Module), ADM (Assist Door Module) constructing the Body Wiring system is connected to BODY CAN*1 .
*1 CAN (Controller Area Network): CAN is serial bus communication type which links not only communication system but also control units each other.