As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 4639, CREW REPORTED THE RED LIGHT AT ROW 13 EXIT SIGN REMAINS ON. AIRCRAFT REMOVED FROM SERVICE. RESET LAV/TOILET CIRCUIT BREAKER AS PER STANDARD MAINTENANCE PRACTICES. NO FURTHER DEFECTS NOTED. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.