As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2174 - DURING POST FLIGHT INSPECTION THE CREW REPORTED AN EMERGENCY LIGHT TO BE INOPERATIVE. MAINTENANCE INSPECTED THE AIRCRAFT, REMOVED AND REPLACED THE NUMBER ONE EMERGENCY LIGHT BATTERY PACK, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.