DTC U0046-81: Vehicle Communication Bus C - Invalid serial data received: Action

WARNING: This page is about a different car, the 2023 Jaguar F-Pace and 2022 Jaguar F-Pace. However, it is still accessible from the selected car via links, so may be relevant.

Using the Jaguar Land Rover approved diagnostic equipment, check the snapshot data to determine the invalid data source control module. Check the relevant control module for related DTC and refer to the relevant DTC index
Using the Jaguar Land Rover approved diagnostic equipment, complete a CAN network integrity test. Refer to the electrical circuit diagrams and check the high speed CAN network (chassis) for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary