Conditions for Setting the DTC

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Internal pressure sensor line fault.
Pressure signal does not correlate to estimated Pressure over time.
Brake Signal does not correlate to Pressure Signal.
Signal is erratic and changes faster than physically allowed.
After replacing the brake pressure sensor, a calibration procedure is required with a scan tool.