As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, RECEIVED STEERING INOP CAUTION MESSAGE. PERFORMED QRH PROCEDURE. ON THE GROUND IN LAX, CONTACTED MX CONTROL AND COMPLETED RESET PROCEDURE AS DIRECTED. NOSE WHEEL STEERING RETURNED AND THE AIRCRAFT WAS ABLE TO MANEUVER TO THE GATE WITH STEERING. (FLT#9371) CLOSED REMOVED AND REPLACED MLG SELECTOR VALVE AS REQUIRED WITH SERVICEABLE UNIT IAW AMM.