As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT LIGHT ILLUMINATED ON START, SECOND START NORMAL. ACFT GROUNDED. PERFORMED APU BITE IAW FIM 49-60, TASK 801. FOUND IN FAULT HISTORY CODE 49-61157. PERFORMED FIM TASK 49-60, TASK 804 FOUND TO BE INTERMITTENT FAULT. APU STARTED NORMAL. GROUND VERIFICATION SUCCESSFUL.