As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE CLIMBING THROUGH 1,500FT THE CREW REPORTED A LAV SMOKE INDICATION. THE FLIGHT ATTENDANT CONFIRMED SMOKE/HAZE IN THE CABIN. THE AIRCRAFT RETURNED TO CMH AND WHILE ON APPROACH THE SMOKE/HAZE DISSIPATED AND THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE RAN BOTH ENGINES AND NO SMOKE OR ODOR WAS REPORTED DURING ENGINE RUNS. ONE QUART OF OIL WAS REMOVED FROM ENGINE 2 AND NO OTHER DEFECTS WERE NOTED AT THAT TIME.