As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY GOING INTO CLT DUE TO NOSE WHEEL STEERING CAUTION MESSAGE. FLIGHT LANDED SAFELY AND WAS ABLE TO RESET WITH MX AFTER GETTING OFF OF THE RUNWAY. CANCELED EMERGENCY AND TAXIED UNDER THEIR OWN POWER TO THE GATE. REMOVED AND REPLACED LANDING GEAR SELECTOR VALVE IAW CRJ900 AMM 32-32-10-000/400-801.