As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
C/B CE3351430 TRIPPED EMERGENCY LIGHTS MTC MSG 42-02164 ACTIVE. FIM DMC-B787-A-42-20-F5-G4A-421A-A. RESET CB. PER FIM ACP CMCF CROWN DOOR 3-2L CCS RDC 05 LRU RPL TEST, PASSED. PER FIM THIS WAS AN INTERMITTANT FAULT. TURNED ON EMERGENCY LIGHTS AND WALKED CABIN, ALL LIGHTS LIT & CB NO TRIP. ACP CMCF EMERGENCY LIGHTS SYSTEM TESTS QUICK EMERGENCY LIGHTING AND FULL EMERGENCY LIGHTING TESTS. COULD NOT DUPLICATE PROBLEM.