As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS AND PASSENGERS COMPLAINED OF A FOUL ODOR THROUGHOUT ENTIRE CABIN. ODOR SIMILAR TO DIRTY CAT LITTER. RAN BOTH ENGINES AND APU TO ISOLATE BLEED SORCES, FOUND NO DIRTY CAT LITTER ODOR COMING FROM EITHER THE ENGINES OR APU IAW AMM 71-00-00 AND 49-00-00 NO DEFECTS NOTED AT THIS TIME