DTC U3000-87: Control Module - Missing message: Action

NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the Diagnostic Trouble Code(s)

Refer to the appropriate service information and check the CAN bus (comfort) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair circuit as required, clear DTC and retest
Using Jaguar Land Rover approved diagnostic equipment, check and update the car configuration file as necessary. Clear the Diagnostic Trouble Code(s) and retest