As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OAK: FLIGHT DIVERTED DUE TO FUMES IN THE AFT CABIN AFTER TAKEOFF. THE RIGHT AFT LAV SMOKE DETECTOR CHIMES SOUNDED APPROX. TEN TIMES. LANDED WITHOUT INCIDENT, MX FOUND THE LEFT COOLING TURBINE LEAKING OIL. REPLACED COOLING TURBINE. PERFORMED HIGH PRESSURE DUCTING BURNOUT AND AIR QUALITY CHECK; NO ODORS OR DISCREPANCIES NOTED.