DTC B100D-77: Column Lock Authorisation - Commanded position not reachable: Action

Turn the steering wheel to ensure that the electric steering column lock mechanism is free to move. Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest
Using the Jaguar Land Rover approved diagnostic equipment, perform a CAN network integrity test. Refer to the appropriate system wiring diagrams and check the high speed CAN bus (body) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test. If the fault persists, install a new electric steering column lock control module