As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA- ON TAXI OUT SMOKE WARNING LIGHT ILLUMINATED WITH NO MASTER WARNING LIGHTS. RETURNED TO GATE. NO SMOKE PRESENT IN AFT CARGO BAY AFTER SHUTDOWN. NR 1 & 2 SMOKE DETECTORS TEST GOOD. NO PARTS REPLACED. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.