As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2833 - DURING PREFLIGHT INSPECTION THE FLIGHT CREW REPORTED THAT EMERGENCY LIGHTS WERE FOUND TO BE INOPERATIVE. MAINTENANCE PERFORMED AN OPERATIONAL TEST OF THE EMERGENCY LIGHTING SYSTEM AND COULD NOT DUPLICATE THE PROBLEM. THE AIRCRAFT WAS THEN RETURNED TO SERVICE.