Have your battery tested. If it is original to the 2021 vehicle, it may be nearing the end of its life, which frequently causes communication errors.
If you are seeing this code, most experts suggest the following: land rover b1d9f11 2021
Since “B1” suggests driver side, start by disconnecting the driver’s door module (the connector at the door hinge). Rescan. If code goes away, the issue is in the door (handle light or puddle lamp). If not, move to the overhead console. Have your battery tested
The is, in nearly all cases, an inconvenient but inexpensive electronic nuisance rather than a catastrophic failure. It signals a short to ground—most likely in the overhead interior light assembly or driver’s door handle illumination. in nearly all cases