As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE GETTING VECTORS FOR APPROACH THE CREW RECEIVED A LG AIR/GND FAIL MESSAGE ON EICAS WHEN THE GEAR WAS EXTENDED. THE QRH WAS FOLLOWED AND THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE NOSE LANDING GEAR STRUT FULLY EXTENDED UPON INSPECTION. THE SERVICE OF THE NOSE LANDING GEAR STRUT WAS ADJUSTED IAW EMB 145 AMM 30-20-01. THE MESSAGE THEN CLEARED WITH NO FURTHER DEFECTS NOTED.