As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FIRE FAIL CAUTION MESSAGE AND FIRE SYS FAULT STATUS MESSAGE CYCLED ON AND OFF DURING TAXI TO THE GATE. APU FIRE WARNING MESSAGE CYCLED THREE TIMES DURING TAXI TO GATE. FOLLOWED BY AN APU BOTTLE LO CAUTION MESSAGE. APU WAS NOT RUNNING AT THE TIME. NO EVIDENCE OF A FIRE WAS PRESENT. INSPECTED APU COMPARTMENT AND FOUND NO SIGNS OF SMOKE OR FIRE. ALL FIRE SYS MESSAGE CLEARED.