DTC U201A-55: Control Module Main Calibration Data - Not configured: Action

NOTE: To validate the repair and clear this DTC, switch the ignition off, wait for the network to go in to sleep mode, this will be indicated by the hazard warning switch back light extinguishing. Wait another 20 seconds, then set the ignition to on.

Perform a full sleep cycle of the vehicle. Switch the ignition off, wait for the network to go in to sleep mode, this will be indicated by the hazard warning switch back light extinguishing. Wait another 20 seconds, then set the ignition to on. Clear the DTCs and retest. If the fault persists, then continue with the repair steps below
Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, using the Jaguar Land Rover approved diagnostic equipment, reconfigure the brake booster module with the latest level software