DTC B1603-00: CAN Bus Off: General Description

WARNING: This page is about a different car, the 2020 Kia Sedona. However, it is still accessible from the selected car via links, so may be relevant.

The main features of CAN (Controller Area Network) bus system are:

A data-Transfer rate up to 1 Mbit/s for the High-Speed CAN and up to 125 kbit/s for the Low-Speed CAN.
Signals are broadcast in both directions
The Multi-master principle.
High availability by locating failed control units.
Standardization in accordance with ISO 11898.

The BCM communicates via B-CAN Communication Line with SJB (Smart Junction Block), Cluster, and SMK (Smart Key) Unit.