As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2586 - EWR - FLIGHT CREW REPORTED STRONG ELECTRICAL SMELL IN AIRCRAFT ON TAXI IN. IT WAS FOUND THAT THE BURNING SMELL WAS COMING FROM APU. EWR MX REMOVES AND REPLACED APU SHUNT AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPPROVED TO RETURN TO SERVICE.