As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FRA - CREW REPORTED LEFT ENGINE ANTI-ICE EICAS MESSAGE (ENGINE *VALVE* LIGHT) AFTER TAKEOFF. EMERGENCY DECLARED RETURNED FRA LANDED WITHOUT INCIDENT. FOUND CONNECTOR ON ENGINE ANTI-ICE VALVE LOOSE, CLEANED CONNECTOR, RETORQUED, RAN OPERATIONAL TEST OF ENGINE ANTI-ICE VALVE AND OPERATION NORMAL. SYSTEM GROUND CHECK NORMAL OPERATION.