As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT LIGHT CAME ON. WITHIN 5 MINUTES FAULT LIGHT WENT OUT. SHUTDOWN APU. ACFT GROUNDED. VERIFIED INLET TEMP SENSOR BAD, READS 300 OHMS PIN TO GROUND, IAW FIM TASK 49-60, TASK 812. REPLACED INLET TEMP SENSOR IAW AMM 49-61-31-000-801 AND 49-61-31-400-801. RAN APU - OK NO FAULTS FOUND.