DTC U0001-49: High speed CAN communication Bus - Internal electronic failure: Action

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2015 Jaguar XKR-S, 2015 Jaguar XKR, 2015 Jaguar XK, 2014 Jaguar XKR-S, and 2014 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.

Using the manufacturer approved diagnostic system, complete the CAN Network Integrity test. Refer to the appropriate electrical circuit wiring diagrams and check the CAN network to the Headlamp Leveling Module. If no CAN Bus circuit faults are evident suspect Adaptive Front Lighting System (AFS) Control Module internal fault, replace as required. Refer to the new module/component installation note at the top of the DTC Index