As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2224 - EWR - FLIGHT CREW REPORTED ENG 1 ANTI ICE VALVE FAIL MESSAGE ON EICAS. CREW PERFORMED AIR RETURN AND LANDED UNEVENTFULLY. EWR MX PERFORMED OPERATIONAL AND FUNCTIONAL CHECK OF THE BLEED SYSTEM AND COULD NOT DUPLICATE MESSAGE. ACFT WAS APPROVED TO RETURN TO SERVICE.