As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGA TO GSP - AFTER TAKEOFF WHILE CLIMBING IN ICING CONDITIONS, THE CREW RECEIVED AN ENGINE NR 1 BLEED OVERHEAT AND ENGINE ANTI-ICE FAIL MESSAGE ON EICAS. THE CREW EXITED THE ICING CONDITIONS AND RETURNED TO LGA. MAINTENANCE OPENED THE AIRCRAFT AND INSPECTED FOR BLEED LEAKS, AND FOUND A B-NUT ON THE E1 BLEED VALVE LOOSE AND LEAKING. THE B-NUT WAS TIGHTENED AND THE BLEED SYSTEM OPS CHECKED GOOD.