As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FAINT TO OCCASIONALLY STRONGER ODOR PRESENT IN CABIN (RIGHT SIDE JUST AFT OF MID GALLEY-FIRST COUPLE ROWS OF PREMIUM ECONOMY) AT TIMES DURING CRUISE UNABLE TO LOCATE SOURCE BUT IT WAS DESCRIBED AS SOMEWHAT ELECTRICAL SMELL. REPLACED MID GALLEY REFRIGERATION ELECTRICAL CONTROL PANEL.