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.
DTC B108E 00
The BCM detects an invalid signal on circuit 278.
DTC B108E 11
The BCM detects a short to ground on circuit 278.
DTC B108E 12
The BCM detects a short to voltage on circuit 278.
DTC B108E 13
The BCM detects an open/high resistance on circuit 278.