As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 554 - MCI - AFTER PUSH BACK FROM GATE AND AFTER APPLICATION OF AIRCRAFT POWER, THE AFT SERVICE DOOR UNSAFE LIGHT ILLUMINATED. RETURNED TO THE GATE. INSPECTED THE AIRCRAFT L2 DOOR, OPEN AND CLOSED DOOR NORMALLY. NO DEFECTS FOUND. (M)