DTC B1621-00: ECU-Failure: General Description
WARNING: This page is about a different car, the 2021 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
The Integrated Central Control Unit (ICU) sends and receives signals from each domains in the vehicle. ICU CAN channel is consist of chassis, powertrain, multimedia, body and diagnostic.
ICU supports communication control for B-CAN, M-CAN, C-CAN, P-CAN, I-CAN and D-CAN.