As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DECLARED AN EMERGENCY INTO GRR ACCOUNT MAINTENANCE, LOSS OF NOSE WHEEL STEERING. AIRCRAFT LANDED WITHOUT INCIDENT AND WAS TOWED TO THE GATE. EMERGENCY VEHICLES RESPONDED AS A PRECAUTION. MAINTENANCE FOUND N/WS FEEDBACK SENSOR 4GC HAS PIN E PUSHED BACK. RAR N/WS FEEDBACK SENSOR 4GC IAW AMM 32-51-19-400-002-A.