Possible Causes
- Unexpected signals received from electric park brake system
- Electric park brake switch circuits short circuit to ground, short circuit to power, open circuit, high resistance
- Electric park brake left or right actuator circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Electric park brake left or right actuator internal failure
- Rear left or rear right brake caliper internal failure
- Anti-lock brake system control module internal failure