DTC B100D-94: Column Lock Authorisation - Unexpected operation: 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.

Using the manufacturer approved diagnostic system, check datalogger signal - Main ECU Voltage Supply (0xDD02). Refer to the relevant section of the service information and test the battery and charging system
Turn the steering wheel to ensure that the electric steering column lock mechanism is free to move and locking bolt is not restricted. Using the manufacturer approved diagnostic system, clear the DTCs and retest
Using the manufacturer approved diagnostic system, perform a CAN network integrity test. Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the high speed CAN bus (powertrain) circuit for short circuit to ground, short circuit to power, open circuit, high resistance
Using the manufacturer approved diagnostic system, clear the DTCs. Perform routine - On Demand Self Test (0x0202). If the fault persists, install a new electric steering column lock control module