As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU OVER SPEED AUTO SHUT DOWN FL400 SAT - 55 DEGREES C CLEAR. ALL OTHER INDICATIONS NORMAL. TROUBLE SHOT IAW FIM 49-30-00-810-802 & PERFORMED APU BITE IAW AMM 49-61 -00. FOUND FAULT MSG 49-31014 & 49-52219. R & R INLET PRESS SENSOR IAW AMM 49-52-31 & AS PRECAUTIONARY. R & R SPEED SENSOR IAW AMM 49-61-21. APU OPERATION NORMAL, FAULTS NO LONGER CURRENT, OK TO CONTINUE.