DTC B2815-00: C-CAN Error: General Description
In general, multimedia devices such as video and audio are composed of a low-speed CAN (M-CAN) network that is optimized for poor connector connection of CAN bus connector, disconnection and short circuit. However, as the vehicle develops, a high-speed CAN (I-CAN) network is constructed as low-speed CAN can not cope with many cases.
In high-speed CAN, if one of the lines in the communication line is poor contacted or disconnected, communication failure occurs.