As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE MAINTENANCE VISIT THE EMERGENCY LIGHT IN AISLE ABOVE SEATS 4AC AND 4DF WAS FOUND NOT TO BE ILLUMINATING. CEILING PANEL WAS REMOVED ABOVE EMERGENCY LIGHT AND FOUND THAT A PLUG WAS DISCONNECTED. PLUG WAS RECONNECTED, AND THE OPERATIONAL CHECK WAS GOOD. AIRCRAFT RETURNED TO SERVICE.