DTC C1B18-2F: Module Power Supplies - Signal erratic: Action
WARNING: This page is about a different car, the 2018 Land Rover Discovery and 2017 Land Rover Discovery. 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 information 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