Theory Of Operation
WARNING: This page is about a different car, the 2024 RAM ProMaster EV. However, it is still accessible from the selected car via links, so may be relevant.
The Brake System Control Module (BSCM) is monitoring the differential pressure in the internal pressure chamber for boosting the pedal force which should be above -200 mbar (-2.9 psi). If the pressure remains below this value for more than two minutes then the system will enter a push through mode and set this DTC. The timer will reset if the if the BSCM detects the pressure remains above 220 mbar (3.19 psi) for ten seconds and the DTC will default to stored.