As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU SHUTDOWN AFTER ENG START. PERFORMED APU BITE. BITE SHOWS HIGH OIL TEMP. REPLACED OIL TE SWITCH PER M/M. APU SHUTS DOWN AFTER 10 MIN. T/S PER FIM 49-11-00 FIG 110 DOWN TO SHEET 4 STEP 9 155986. CONT T/S NE OIL COOLER BYPASS VALVE 155986. REPLACED AIR/OIL COOLER ASS P/N 160126-2 PER M/M AND IPC APU RAN 30 MIN WITH NO FAULTS MCO/PLAC REMOVED.