As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 7961 - RUDDER PEDALS WILL NOT MOVE. HYDRAULIC PRESSURE INDICATED GOOD. FOLLOWED BY A YAW DAMPER FAIL MESSAGE ON THE EICAS. MAINTENANCE DISENGAGED THE AUTOPILOT/YAW DAMPER AND PERFORMED A SUCCESSFUL OPERATIONAL CHECK OF THE RUDDER. MAINTENANCE PLACED THE YAW DAMPER FUNCTION ON MEL.