As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED ON APPROACH A NOSE WHEEL STEERING INOP MESSAGE WAS DISPLAYED. CREW AS A PRECAUTION DECLARED AN EMERGENCY. CREW LANDED IN CLT WITHOUT INCIDENT AND WAS TOWED FROM THE TAXIWAY TO THE GATE. MAINTENANCE INSPECTED THE NOSE LANDING GEAR ASSEMBLY. MAINTENANCE REMOVED AND REPLACED THE HYDRAULIC MANIFOLD IN ACCORDANCE WITH THE AIRCRAFT MAINTENANCE MANUAL. OPERATIONAL CHECKS GOOD AT THIS TIME. AIRCRAFT WAS RELEASED FOR SERVICE.