Conditions for Setting the DTC
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
B1451 11
The body control module detects a short to ground on the passive entry rear closure antenna signal circuit three or more times.
B1451 12
The body control module detects a short to voltage on the passive entry rear closure antenna signal circuit three or more times.
B1451 13
The body control module detects an open on the passive entry rear closure antenna circuit three or more times.