As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE LAV SMOKE WARNING ILLUMINATED. SPOKE TO FA AND IT WAS THE FORWARD AND IT WAS OCCUPIED, PASSENGER OPENED LAV DOOR IMMEDIATELY AND IT EXTINGUISHED. NO SMOKE SMELL NOTED. REMOVED FROM SERVICE. C/W LAVATORY SMOKE DETECTOR OPS TEST REF AMM TASK 26-14-01-710-801-A PARA 1-8 C-D &9. OPS TEST GOOD. AIRCRAFT RETURNED TO SERVICE.