As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH INTO DTW RECEIVED NOSE WHEEL STEERING CAUTION MSG WITH LANDING GEAR SELECTED DOWN, WOULD NOT RESET. EMERGENCY DECLARED, A/C LANDED SAFELY. ON INSPECTION FOUND NWS CONNECTOR P86 BACKED OFF. RESECURED CONNECTOR AND PERFORMED OPS CHECK. OPS CHECK GOOD.