DTC U0001-81: Vehicle Communication Bus C - Invalid serial data received: Action

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This DTC was removed at software level GX63-14C090-DM001 and is not supported in latest software versions and only exists for compatibility purposes

Using the Jaguar Land Rover approved diagnostic equipment check the snapshot data (0xD020) to determine the invalid data source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index. Clear the DTCs and retest