As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO FAIL LIGHT (PRESS PANEL) CAME ON AT THE START OF DESCENT FROM FL 380. RAN QRH PROCEDURE LIGHT WENT OUT IN ALTN MODE. CYCLED PRESSURIZATION LOAD SELECTOR SWITCH. AUTO FAIL LIGHT REMAINED EXTINGUISHED. PERFORMED BITE CHECK DEPC NR 1 AND NR 2 NO CURRENT FAULTS FOUND. OP CHECK AND GROUND CHECKS NORMAL PER FIM 21 31 00. NO HISTORY FOR 30 DAYS, SEAMC NOTIFIED.