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 OUT AND THAN EXTINGUISHED AFTER APROX 30 SECONDS. APU HAD BEEN OFF FOR SEVERAL MINUTES. APU STARTED, SHUTDOWN, AND RESTARTED. ALL NORMAL. APU OPS NORMAL. APU VOLT AND FREQUENCY NORMAL. ACFT GROUNDED. PERFORMED APU BITE TEST REF MM 49-61-00 FOUND MAINT MSG 49-91006, 4, PREVIOUS CYCLE. CURRENT STATUS NO FAILURE. STARTED APU 2 TIMES REF MM 49-11-00. OPS CHECK NORMAL. NO FAULT LIGHT NOTED.