C012E Code: Meaning, Causes, and Symptoms | OBD2 Codes

C012E – Hydraulic Brake Boost Pressure Loss


C012E Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C012E Possible Causes


Faulty Brake Pressure Modulator,Brake Pressure Modulator harness is open or shorted,Brake Pressure Modulator circuit poor electrical connection


C012E Description


The boost pressure valve is internal to the brake pressure modulator. The Electronic Brake Control Module (EBCM) monitors the boost pressure. The boost valve controls the amount of hydraulic boost required during braking or a vehicle stability event. When a boost fault condition is detected, the boost control will continue applying as much pressure as possible until boost pressure is no longer available.