As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELECTRICAL ODOR IN ACFT, NO DISCERNABLE LOCATION. AFTER EXTENSIVE TROUBLESHOOTING OF ACFT SYSTEMS, NO FAULTS FOUND. ODOR WENT AWAY. THERE ARE NO FAULTS FOUND ON THE ACFT SYS AND AFTER USING APU AND PACKS ODOR WENT AWAY AND HASN'T RETURNED IAW TSM.