DTC C1B18-2F: Module Power Supplies - Signal erratic: 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.
- Check the module connector(s) for security and integrity. Rectify as required
- Refer to the appropriate system wiring diagrams and check the power supply circuit(s) to the module for poor or intermittent connection. Repair circuit(s) as required, clear the DTCs and retest