DTC U1A00-31: Private Communication Network - 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.

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 circuit for short circuit to ground, short circuit to power, open circuit, high resistance