DTC C1611, C1612 Or C1613: Condition
WARNING: This page is about a different car, the 2002 Hyundai XG350. However, it is still accessible from the selected car via links, so may be relevant.
DTC C1611 or C1612 are set when communication error between ABS and specified control modules is detected for 500 msec. DTC C1613 is set when A/T or M/T signals mismatch between Engine Control Module (ECM) and Transmission Control Module (TCM).