DTC C1017-23: Boot/Trunk Primary Switch - Signal stuck low: Action

WARNING: This page is about a different car, the 2015 Jaguar XF, 2014 Jaguar XF, and 2013 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This circuit/switch is available as an option

Refer to the system wiring diagram(s) and check the tailgate lock switch circuit for short circuit to ground
If the fault persists, check and install a new tailgate lock switch as required