As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT NR 2378: ICE DETECT FAIL CAUTION ILLUMINATED (FAILED TO EXTINGUISH AFTER PROPS OUT OF FEATHER). AIRCRAFT RETURNED TO GATE. MAINTENANCE REMOVED AND REPLACED LT ICE DETECTOR PROBE IAW Q400 AMM TASKS 30-80-01-000-801 AND 30-80-01-400-801. LT ICE DETECTOR PROBE, OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.