As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT ECAM DURING START UP. ONLY GOT UP TO 17 PERCENT, THEN AUTOSHUTDOWN. TRIED TO START APU TWO TIMES DURING DESCENT. BOTH WITH AUTO SHUTDOWN & APU FAULT ECAM. TROUBLESHOT IAW TSM 49-00-00. FOUND IGNITER AT FAULT. REMOVED AND REPLACED BOTH APU IGNITER PLUGS IAW AMM 49-41-41. APU STARTED OK. ECAM MESSAGE CLEARED.