As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DIRTY SOCK, CHEMICAL, MUSTY ODOR REPORTED BY CREW AND PASSENGERS. SMELL STOPPED WHEN APU BLEED WAS TURNED OFF. MAINTENANCE ORIGINALLY ACCOMPLISHED JOB CARDS 26L00021001 "CABIN AIR QUALITY" AND "APU SMELL" 26L00021002 AND REPLACED CABIN AIR FLITERS. FOUND LEAK AROUND LUBE MODULE, REPLACED APU LUBE PUMP MODULE PER MM 49-91-45 AND PERFORMED SATISFACTORY OPERATIONAL CHECK.