As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A ATB - LEVEL 1 ALERT; ANTI ICE FAIL MESSAGE. PER BOW#TS2220 998 WAN #1316400 PERFORMED LEAK TEST AND PROOF TEST NR 1 ENG HIGH STAGE VALVE SENSE LINE PER MM 36-10-00-5. NO LEAK NOTED. REPLACED HIGH STAGE PILOT VALVE PER MM 36-11-20. REPLACED PSC1 PER MM 36-10-02.