Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
P2534
The control module detects 6 V or less on the ignition voltage circuit, with the ignition turned ON.
P2535
The control module detects greater than 6 V or greater on the ignition voltage circuit, with the ignition turned OFF.