As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU AUTO SHUTDOWN AFTER PUSHBACK. RESTART WAS NORMAL, BUT HAS HISTORY. [07-20-07] REPLACED APU CONTROL UNIT PER MM 49-61-05 AND P2 SENSOR PER MM 49-61-04. CK'D P2 SENSOR LINE FOR OBSTRUCTION, NONE FOUND. RAN APU FULLY LOADED WITH ELEC AND PNEUMATICS. NO FAULTS. OK FOR SERVICE.