As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - CREW REPORTED A LANDING GEAR AIR/GROUND MESSAGE AFTER TAKEOFF FROM IAH. AIRCRAFT AIR RETURNED TO IAH, LANDING WAS UNEVENTFUL. MAINTENANCE TROUBLESHOT SYSTEM AND REMOVED AND REPLACED RELAY K0325 AND K0023 REFERENCE AMM 20-13-02. PERFORMED LANDING GEAR SWING REFERENCE EMB145 AMM 32-32-00. OPS CHECKED SYSTEM GOOD. AIRCRAFT RETURNED TO SERVICE.