DTC C28AB-87: CAN Time-Out FR_RDR: General Description
WARNING: This page is about a different car, the 2023 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
In MFC, CAN line which is directly connected to FCA exists separately from Chassis CAN. The relevant CAN is defined as L-CAN, and the relevant CAN transmits or receives CAN signal for carrying out FCA function among MFC-FCA functions. The relevant function is not MFC function and this function is carried out by FCA, so if the relevant CAN signal is abnormal, the warning light of MFC is not turned on, but DTC is saved internally for vehicle inspection.