I used a friend’s OBD scanner, to diagnose a TPMS fault on another car. While we were at it we hooked it up to my ‘15 XKR, and after clearing all fails did a few scans, and it constantly gave B1A56-13 Antenna Circuit Fault, . My navigation screen is wonky and has the jitters, and AM/Fm reception is weak, and back up camera is jittery.

The code indicates antenna circuit open.

Since the antenna and other stuff comes from the rear of the car, I’m wondering if there is a common spot where wiring is susceptible to damage.

Any suggestions?

 

The actual antenna, inside the spoiler.