As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT, RETURNED TO GATE. PERFORMED IDENTIFICATION OF SMOKE AND/OR OIL SMELLS IN CABIN PER TSM 71-00-00-810-892-A. FOUND NO ODORS OR SMOKE. PERFORMED BORESCOPE INSPECTION OF BOTH ENGINE REFERENCE AMM 72-30-00-290-801. NO DEFECTS OR INDICATION OF OIL WETTING NOTED.