Probable Causes

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

Calibration failure of the G and yaw rate sensor
Calibration failure of the brake fluid pressure sensor
Seizure of the parking brake switch
Malfunction of wheel speed sensor
Malfunction of ETACS-ECU
Malfunction of hydraulic unit (integrated with ASC-ECU)
Wiring harness or connector failure of CAN bus line
Damaged wiring harness and connectors