DTC B12B8-01: USB Port #2 - General electrical failure: Action
WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
- Refer to the appropriate SYSTEM WIRING DIAGRAMS information and check the USB on-the-go data circuit for short circuit to ground, short circuit to power, open circuit, high resistance