DTC U0543-81: Invalid Data Received From Headlamp Control Module "B" - 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.
- Refer to the electrical circuit diagrams and check the Headlamp Control Module A power supply circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the circuit as necessary
- Using the Jaguar Land Rover approved diagnostic equipment, complete a CAN network integrity test. Refer to the electrical circuit diagrams and check the SUB-CAN network for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the circuit as necessary