DTC U0046-31: Vehicle Communication Bus C - No Signal: Action

WARNING: This page is about a different car, the 2021 Land Rover Range Rover and 2020 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This DTC refers to a CAN bus communications failure, DO NOT replace the side obstacle detection control module

Using the Jaguar Land Rover approved diagnostic equipment, check the snapshot (0xD020) data to determine the missing signal source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index
Using the Jaguar Land Rover approved diagnostic equipment, perform a CAN network integrity test. Refer to the appropriate service information and check the high speed CAN bus (chassis) circuit for short circuit to ground, short circuit to power, open circuit, high resistance