DTC B1252-01: USB Port - General electrical failure: Action
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, 2016 Land Rover Range Rover, 2015 Land Rover Range Rover, and 2014 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.
- Refer to the appropriate system wiring diagrams and check the USB data circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Check the USB device
- Using JLR approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new SIM card reader module as required