DTC C104C-28: Rear Axle Piston Pressure Regulating Valve - Signal bias level out of range/zero adjustment failure: Action
- Refer to the appropriate system wiring diagram and check the dynamic response rear actuator piston-side pressure regulating valve coil circuit, harness and connectors (positive or negative) for short circuit to another circuit. Repair circuit as required, clear the DTCs and retest
- If the fault persists, install a new dynamic response control module