As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU INOPERATIVE. REMOVED AND REPLACED THE FLOW SENSING MODULE IAW AMM 49-53-08. OPS CHECKED OK. PERFORMED ECU BITE, TESTED OK. REPLACED SURGE VALVE, NO HELP IAW AMM 49-53-01. TIGHTENED THE APU INLET TEMP SENSOR IAW AMM 49-6103&, OPS CHECKED OK.