As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW DIVERTED ACFT DUE TO AFT LAVATORY SMOKE DETECTORS SOUNDING WITH LIGHT HAZE AND ODOR IN THE CABIN. MX COMPLIED WITH OPN 5088 - AND NO TROUBLE WAS FOUND. BORESCOPED BOTH ENGINES - NO ISSUES. RAN ENGINES FOR 20 MINUTES AT POWER - NO SMOKE OR ODORS. PERFORMED DUCT BURNOUT AND REPLACED AFT SMOKE DETECTOR. OK FOR SERVICE.