As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR - CREW REPORTED LAV SMOKE WARNING WITH ELECTRICAL SMOKE SMELL IN THE GALLEY. PERFORMED 15 MINUTES OF GROUND RUNS, OPS CHECK OF BOTH ENGINE BLEEDS AND APU BLEED. NO ELECTRICAL SMOKE NOTED. REMOVED AND REPLACED GALLEY SMOKE DETECTOR. AIRCRAFT RETURNED TO SERVICE.