As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING TSR908214, FOUND APU BITE CURRENT STATUS WITH FAULT MESSAGES 49-72101 DATA MEMORY MODULE POWER SHOWS HIGH CURRENT AND 49-72103 DATA MEMORY MODULE SHOWS CIRCUIT FAILURE. GROUNDED - YES. REMOVED AND REPLACED APU DMM PER B737-800 AMM 49-72-11. OPERATION TEST NORMAL & NO FAULTS MSG 49-72103 & 49-72101 NOTED. CLEARED MEL 49-1B.