As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 3009 - EWR - FLIGHT CREW REPORTED NR 1 ENG ANTI-ICE OPEN INDICATION INOPERATIVE IN ICE CONDITION. EWR MX REMOVED AND REPLACED NR 1 ENGINE ANTI-ICE VALVE AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. AIRCRAFT WAS APPROVED TO RETURN TO SERVICE.