As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT CODE ON AFTER A MANUAL SHUTDOWN 1 HOUR PRIOR TO LANDING. LIGHT EXTINGUISHED AFTER 5 MIN. APU MASTER CAUTION LIGHT DID NOT STAY ILLUMINATED AFTER FAULT LIGHT WENT OUT. PERFORMED FIM, STEP F (1) B (4) VALVE OPERATION NORMAL. NO MX MESSAGE. (CLEAN AND RESEATED CONNECTOR PLUG) OPS CHECK GOOD. OK FOR SERVICE. (K)