As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR DISTRIBUTION: CRUISING AT FL400 WE GOT A TEMP FAULT CABIN WHITE MESSAGE. IT EXTINGUISHED AFTER ABOUT 5 SECONDS. THEN WE GOT AN AMBER ACM O'HEAT FOLLOWED BY AN AMBER EMER PRESS. ALL CHECKLISTS WERE COMPLIED WITH. // SIGN OFF // REMOVED AND REPLACED CABIN DUCT TEMP SENSOR TT041 SN: 241444 WITH NEW SN: 330012. PERFORMED SATISFACTORY OPS CHECK, WORK PERFORMED IAW CE-680A AMM 21-60-10 & 21-60-00