As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2573, THE CREW REPORTED A LANDING GEAR AIR/GROUND FAIL MESSAGE AND A ENG 1-2 REV DISAGREE MESSAGE ON CLIMB. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE NOSE LANDING GEAR TO REQUIRE SERVICING. MAINTENANCE SERVICED THE LANDING GEAR, OPERATIONALLY TESTED WITH NO DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.