As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT RECEIVED STEERING INOP CAUTION C/W QRH WOULD NOT RESET, WITH GEAR DOWN IN FLIGHT OR ON GROUND WOULD NOT RESET. EMERGENCY DECLARED, A/C TOWED TO THE GATE ****AIRCRAFT REMOVED FROM SERVICE ***** R2 NOSE LANDING GEAR SERVO VALVE PER AMM 32-51 OPS AND LEAK CHECK GOOD.