As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT LIGHT ON START. GROUNDED - YES. PERFORMED, APU BITE, FOUND FAULT 49-11019 POWER INTERRUPT DUE TO APU SHUTDOWN. NO OTHER FAULTS FOUND. PERFORMED APU START WITH NO FAULTS, SUCCESSFUL GROUND VERIFICATION. REF FIM 49-60 TASK 801.