As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2566 - EWR - CREW REPORTED BAG SMOKE INDICATION ON EICAS DURING TAXI. CREW RETURNED TO GATE WITHOUT ANY INCIDENT. EWR MX REMOVED AND REPLACED BAG SMOKE DETECTOR AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. AIRCRAFT WAS APPROVED TO RETURN TO SERVICE.