WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
DTC
CONSULT display description
DTC detecting condition
Possible cause
B2622
INSIDE ANTENNA
An excessive high or low voltage from inside antenna (console) is sent to BCM.
Inside key antenna (console)
Harness or connector
[Inside key antenna (console) circuit is open or shorted]