As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ON CLIMBOUT FROM MHT, CREW RECEIVED A NOSEWHEEL STEERING INOP CAUTION MESSAGE. CREW RAN THE QRH AND CONTINUED TO DCA. THE CREW DECLARED AN EMERGENCY AS A PRECAUTION GOING INBOUND. THE FLIGHT LANDED ON RUNWAY 19 IN DCA AND WAS ABLE TO MAKE A TURN OFF THE RUNWAY TO RUNWAY 22 UNDER THEIR OWN POWER AND CANCELED THE EMERGENCY. CREW WAS ABLE TO RESET THE SYSTEM WITH MAINTENANCE AND TAXIED TO THE GATE WITH NO ISSUES.