Possible Causes

WARNING: This page is about a different car, the 2015 Land Rover LR2, 2014 Land Rover LR2, and 2013 Land Rover LR2. However, it is still accessible from the selected car via links, so may be relevant.

Right electric park brake actuator circuit between electric park brake control module pin 12 or 27 and electric park brake actuator pin 1 or 2 is short circuit to power
Right electric park brake actuator circuit short to power
Right electric park brake actuator internal fault
Electric park brake control module internal fault