As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2386, THE CREW REPORTED A LAV SMOKE INDICATION DURING CLIMB. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT WITH NO INDICATION OF SMOKE OR FIRE FOUND, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.