Conditions for Setting the DTC
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
DTC B2545 00 will set when one of the following conditions exists:
- The BCM detects a short to ground in the backup lamps control circuit.
- The BCM detects a short to ground or an open/high resistance in the BCM B+ circuit terminal 4 X4.