As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - CREW REPORTED AIR/GROUND DISAGREE STATUS MESSAGE AFTER TAKEOFF. FLIGHT RETURNED JFK LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED RIGHT MAIN LANDING GEAR TILT SENSOR THAT HAD FAULTED. ACCOMPLISHED GEAR SWING NO FAULTS FOUND. SYSTEM GROUND CHECKED NORMAL OPERATION.