As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2020, DURING PREFLIGHT INSPECTION THE CREW REPORTED AN EXIT LIGHT IN THE CABIN AS INOPERATIVE. MAINTENANCE CLEANED THE CONNECTOR ON THE AFFECTED EXIT LIGHT, OPERATIONALLY TESTED WITH NO DEFECTS. AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.