As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LINE CHECK, MAINTENANCE FOUND THAT THE EMERGENCY PATHWAY LIGHTING IN ROWS 18-21 OF THE CABIN WERE INOPERATIVE. FURTHER INSPECTION REVEALED THAT THE WIRE HARNESS UNDER SEAT ROW 20 AND 21 WAS SMASHED AND CAUSING A SHORT. THE WIRING WAS REPLACED, AS WAS THE FUSE, AND THE SYSTEM FUNCTIONAL CHECK WAS GOOD.