As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT ODOR ISSUE, FLIGHT DIVERTED. ACCOMPLISHED PACK RUN WITH APU. NO UNUSUAL ODORS. CHECKED E&E COMPARTMENT FOR UNUSUAL ODORS, NONE NOTED. NO ELECTRICAL OR OVERHEAT EVIDENCE OF ANY KIND NOTED ON THE ACFT. INSPECTED AND REPLACED RECIRC FAN FILTERS. REPLACED EQUIPMENT COOLING FAN. RAN PACKS (ISOLATED) HI-PWR, NO ODOR NOTED.