As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) LAV FIRE LIGHT ILLUMINATED ON TAXI PRIOR TO TAKEOFF. UPON ENGINE SHUTDOWN LIGHT EXTINGUISHED AND ILLUMINATED UPON RESTART OF ENGINES. REMOVED LAV DETECTOR CAUSING FALSE FIRE INDICATION AS IT WAS NOT REQUIRED FOR CURRENT ACFT CONFIGURATION.