DTC B1479-98: Power Supply Distribution Box - Component or system over temperature: Action

WARNING: This page is about a different car, the 2016 Land Rover LR4, 2015 Land Rover LR4, and 2014 Land Rover LR4. 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 power supply distribution box circuit for short circuit to ground, open circuit, high resistance. Repair circuit as required
Allow the vehicle to cool. Using the manufacturer approved diagnostic system, clear the DTCs, lock the vehicle and wait 2 minutes. Unlock the vehicle and run the engine for 5 minutes with all electrical loads on. If the fault persists, install a new power supply distribution box as required