"THIS BULLETIN PROVIDES AN INSPECTION AND ADJUSTMENT PROCEDURE TO ADDRESS A DTC C0075 WHICH MAY BE STORED IN THE VEHICLE DYNAMICS CONTROL AND HYDRAULIC CONTROL UNIT (VDCCM&HCU). THE DTC RELATES TO INCORRECT INPUTS TO WHEEL CYLINDER PRESSURE SENSORS DUE TO AIR IN THE HYDRAULIC BRAKE LINES. IN ADDITION, ON IMPREZA AND XV CROSSTREK, AN IMPROPERLY ADJUSTED BRAKE LIGHT SWITCH (BLS) MAY
ALSO CAUSE THE DTC."