As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT T2353 - LATE IN THE TAKEOFF ROLL AT ORD, RT ENGINE HIGH STAGE LIGHT AND EICAS MESSAGE CAME ON FOLLOWED BY HOT ODOR NOTED IN COCKPIT. AIRCRAFT RETURNED TO ORD AND LANDED WITHOUT INCIDENT. REPLACED RT HIGH STAGE VALVE. ACCOMPLISHED LEAK CHECK WITH NO DEFECTS FOUND. ACCOMPLISHED GROUND ENGINE RUN WITH NO ODOR OR DEFECTS FOUND. SYSTEM GROUND CHECKED NORMAL OPERATION. (X)