As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURN TO AIRPORT. ANTI ICE ENG 2 FAIL AND ANTI ICE ENG 1 FAILED APPEARED ON EICAS AFTER TAKEOFF AND STAYED ON AFTER QRH PROCEDURE. PERFORMED BOTH ENG ANTI-ICE VALVES OPS CHECK & FOUND WORKING PROPERLY. NO FAULT NOTED OR RECORDED IAW FIM 30-21-00.