Conditions for Setting the DTC
WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
DTC B2580 01
The BCM detects a short to voltage in the headlamp high beam relay control circuit.
DTC B2580 02
The BCM detects a short to ground in the headlamp high beam relay control circuit.
DTC B2580 04
The BCM detects an open in the headlamp high beam relay control circuit.