DTC Description
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
C1625-00 is set when C-CAN communication is normal, but CGW* cannot receive C-CAN message from ABS/ESP* for 10sec because there is Faulty Power Supply to ABS/ESP*, or Open/Poor Connection in High Line / Low Line of ABS/ESP* Branch Circuit of C-CAN Network.
If the DTC still appears even if the problem is corrected and the system operates normally, perform "Vehicle S/W Management " → "Erase Network Configuration", and erase the DTC.