As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 0001 - ONT - FLIGHT CREW REPORTED LAV SMOKE INDICATION DURING CLIMB. NO VISIBLE SMOKE. AIRCRAFT RETURNED TO BLOCK WITHOUT INCIDENT, EMERGENCY WAS NOT DECLARED. MX PERSONNEL INSPECTED AND FOUND NO DEFECTS. OPERATIONALLY CHECKED SATISFACTORY. AIRCRAFT WAS RELEASED TO RETURN TO SERVICE.