As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL WHEN SWITCHING BLEEDS TO APU, APU FIRE WARNING FOLLOWED BY APU SHUTDOWN & APU FAULT CAUTION MESSAGE. ALSO NOTE DOOR INHIB - APU FIRE WARNING LASTED ONLY 2-3 SECONDS. COMPLIED WITH REINSPECT OF APU COMPARTMENT WITH NO DEFECTS NOTED. CLEARED FAULTS FROM APU ECU. REPLACED DOOR UP AND DOOR DOWN RELAY IAW AMM 24-01-05. OPERATIONAL CHECK GOOD.