I have no idea on that maybe someone else will know.
My Unit on the dash shows these things from the OBD:
Speedometer
RPM's
Volts
Air/fuel ratio
Coolant and oil temps
My guess it goes to something that's Aftermarket that gets it's reading from the OBD port, I have this OBD gauge the one on the left in the picture.
https://wranglerjkforum.net/attachments/001-jpg.115277/
Looks like the other side is loose also, I don't see the passenger side tie rod moving much.
Usually when I check tie rods i'll have someone move the steering wheel back and forth with the engine off. Then i'll watch for movement in the tie rods.
Are you on dry pavement when this is happening? If so your not supposed to do that, only use 4x4 when the roads have snow or offroading in dirt or mud.