As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT NR 2386: DURING TAXI OUT, FUSELAGE DOOR WARNING LIGHT ILLUMINATED. AFT CARGO DOOR SHOWED OPEN. AIRCRAFT RETURNED TO GATE. MAINTENANCE C/W GVI OF AFT CARGO DOOR WITH NO DEFECTS NOTED. C/W OPERATIONAL TEST OF THE AFT BAGGAGE DOOR IAW TASK 52-31-00-710-801. NO DEFECTS NOTED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.