As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENG SHUTDOWN AT GATE FLIGHT ATTENDANT COMPLAINED OF ODOR IN CABIN. FIRST OFFICER PERFORMED WALK AROUND AND ENG NR 1 WAS SMOKING FROM EXHAUST. AIRCRAFT IS HEADING 080 DEG AND WIND IS FROM N/E SO SUSPECT APU IS INGESTING SMOKE FROM NR 1 ENG. REMOVED AND REPLACED FUEL DISTRIBUTION VALVE ON NR 1 ENGINE IAW AMM 73-13-43. LEAK CHECK AND OPS CHECK GOOD.