DTC B1111-77: Electric Park Brake Enable - Commanded position not reachable: Action

NOTE: This DTC is set when at least one brake is in brake state unknown or one brake is applied or fully applied while the other brake is released or fully released.

Refer to the appropriate system wiring diagrams and check the electric park brake left and right actuator circuits for short circuit to ground, short circuit to power, open circuit, high resistance. Repair circuit as required
Test the operation of the left and right electric park brake actuators. Rectify as required
Test the operation of the rear left and rear right brake calipers. Rectify as required
Using the Jaguar Land Rover Approved Diagnostic Equipment, clear the DTCs and retest. If the fault persists, install a new anti-lock brake system control module