As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU WOULD NOT START AND THE FAULT LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED ON BOARD APU MAINT BITE CHECK NO FAULT NOTED NO RECENT HISTORY (TRAX). INTERROGATED FAULT HISTORY FOUND MSG 49-41012 NOT ACTIVE AND MSG 49-41254 NOT ACTIVE BOTH FAULTS INDICATE INTERMITTENT. REF B737-9 IFIM49-40-00-818. APU OPS NORMAL.