DTC U0046-87: Vehicle Communication Bus C - Missing message: Action

NOTE: Do NOT install a new dynamic response control module as this will NOT rectify the fault

Using JLR approved diagnostic equipment, check the snapshot data to determine the missing message source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index
Using JLR approved diagnostic equipment, complete a CAN network integrity test. Refer to the appropriate system wiring diagram and check the high speed CAN network (chassis) between the relevant control module (i.e. as indicated by the snapshot data) and the dynamic response control module