As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: REMOTE WIRELESS EMERGENCY LIGHTING SYSTEM CONTROL UNIT CONFIGURATION DID NOT AGREE WITH OTHER WIRELESS EMERGENCY LIGHTING SYSTEM CONTROL UNITS, WITH FAULT CODE 33-12131. MAINTENANCE REPLACED DOOR 4L WIRELESS EMERGENCY LIGHTING SYSTEM CONTROL UNIT AND PERFORMED SATISFACTORY OPERATIONAL CHECK PER AMM 33-51-07.