As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF FROM BWI, THE CREW RAISED THE LANDING GEAR HANDLE AND RECEIVED A LANDING GEAR LEVER DISAGREE MESSAGE ON EICAS, AND THE LEFT MAIN GEAR INDICATION WAS RED WITH THE RIGHT AND NOSE GEAR INDICATING GREEN. THE QRH WAS FOLLOWED AND THE GEAR LEVER WAS CYCLED AGAIN AND ALL THREE GEAR INDICATED GREEN. THE FLIGHT CONTINUED TO LGA AND LANDED WITHOUT INCIDENT. MAINTENANCE RESET THE AIR/GROUND SYSTEM IAW EMB 145 MM 32-63-00 WITH NO DEFECTS NOTED.