DTC B1479-48: Power Supply Distribution Box - Supervision Software Failure: 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.
- Refer to the electrical circuit diagrams and check the Power Supply Distribution Box (PSDB) circuit for short circuit to ground, open circuit, high resistance. Repair circuit as required
- Refer to the electrical circuit diagrams and check the integrity of the startup and/or auxiliary battery circuit connections at the battery terminals. Rectify as required
- Refer to the relevant section of the workshop manual and test the auxiliary battery with the Jaguar Land Rover approved battery health testing tool. Charge the auxiliary battery if necessary and retest
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new Power Supply Distribution Box (PSDB) as necessary