DTC C1B18-2F: Module Power Supplies - Signal erratic: 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.

Check the module connector(s) for security and integrity. Refer to the electrical circuit diagrams and check the suspension control module power and ground circuits for open circuit, high resistance