DTC C1616-88: C-CAN Bus Off: General Description
WARNING: This page is about a different car, the 2024 Kia Sorento. However, it is still accessible from the selected car via links, so may be relevant.
The Motor Driven Power Steering (MDPS) ECU controls warning lamp by sending a signal via CAN line. After sending a message, MDPS ECU checks signal about whether other ECU receives a signal correctly. If MDPS ECU receives signal from other ECU it recognizes that a message was transmitted normally.