DTC B14A3-31: APIX Display Link - User Interface Panel - No signal: 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.

Using the Jaguar Land Rover approved diagnostic equipment, update the infotainment master controller to the latest level software. Clear the DTCs and retest
If the fault persists, replace the portable audio interface panel and retest
If the fault persists, replace the infotainment master controller
Using the Jaguar Land Rover approved diagnostic equipment, update the infotainment slave controller (where fitted) to the latest level software. Clear the DTCs and retest
If the fault persists, replace the rear portable audio interface panel and retest
If the fault persists, replace the infotainment slave controller (where fitted)