As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FL290 GOT A LEVEL 1 ALERT "ENG 2 ANTI-ICE OFF". A FEW MINUTES LATER GOT A LEVEL 3 "ENG 2 ANTI-ICE DUCT" ALERT WHICH REQUIRED THE NR 2 ENG BE SHUT DOWN. DIVERTED TO RJBB. CHECKED INDIVIDUAL RESISTANCE AND FOUND OVERHEAT SENSOR D1-90 IS 4.8K OHM. REPLACED D1-90 PER MM 30-22-11-4 AND ALSO VISUAL INSPECTED DUCT FROM PANEL NR 364PR AND 364HR, FOUND NORMAL.