As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMELLING RESIDUAL ODOR FROM FUME EVENT-PERFORMED CABIN ODOR ISOLATION AND FOUND PACK 2 TO BE THE SOURCE OF THE ODOR. INSPECTED BOTH ENGINES AND APU NO EVIDENCE FLUIDS LEAKS ALSO INSP. APU INLET, PACK INLET CHECK GOOD. IAW AMM 05-50-00-810-831A