Conditions for Setting the DTC
WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
The brake pedal is sensed as applied for 3 minutes, when the brake pressure does not increase, and the vehicle speed is not slowing.
or
The brake pedal is sensed as released for 5 seconds, when the brake pressure is increasing, and the vehicle speed is slowing.