DTC U0028-87: Vehicle Communication Bus A - Missing message: Action

Using the Jaguar Land Rover approved diagnostic equipment, check the snapshot data to determine the missing message source control module. Check the relevant control module for related Diagnostic Trouble Code(s) and refer to the relevant DTC index
Perform a CAN network integrity test. Refer to the appropriate service information and check the high speed CAN bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary