DTC U0111-87: Lost Communication With Battery Energy Control Module 'A': 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.
Each module (HPCU, OBC, etc.) exchanges information among them through P-CAN communication lines. The P-CAN communication system consists of a high line, a low line, and 2 resistors (120Ω) at each end of the lines. The lines are in a BUS-shape network structure.