As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORT APU SHUTDOWN WITH FAULT ON PUSH BACK. REPEAT EVENT DUE TO ERRATIC OIL TEMP. REPLACED OIL TEMP SENSOR, NO HELP. APUC REPLACED, NO HELP. WIRING CHECKED GOOD. TROUBLE SHOT DOWN TO VLV TEMP CONTROLLER. CLEANED & RESEATED FIRE WALL CONNECTOR D49001P. WORKED WITH FIM TASK 49-20 TASK 808 & WDM 4-9-94-11.