DTC U0001-88: High Speed CAN Communication Bus - Bus off: 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.

Clear the diagnostic trouble code and retest the system. Refer to the appropriate system wiring diagrams and check high speed CAN bus for short to ground, short to power, open circuit, short between CAN high and CAN low