C1282 = Brake Failure, low pressure detected
Most common cause is riding the brake pedal without actually putting pressure on it. Sometimes this can be cause by accumulated debris. It can also be caused by an improperly adjusted brake switch, a failed sensor, or an actual loss of hydraulic pressure due to a problem in a caliper or master cylinder. It could also indicate severely worn brake pads. Be sure you are not touching the brake pedal, be sure there is nothing lodged between the pedal and return stop to prevent its full return, and be sure the switch is not clogged with debris and that it has a tiny bit of free play before engaging. Inspect the brake pads. You cannot do this visually, as they are very thin anyway, they really should be measured. Minimum thickness is 1 mm. Beyond all this, see a dealer ASAP. If it is a hydraulic problem you could lose your brakes altogether quite suddenly.