As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/EWR - FLT 6435 - ABORTED TAKEOFF DUE TO THE LEFT ENGINE ONLY MAKING 92 PERCENT TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE RECALIBRATED THE TORQUE SIGNAL CONDITIONER. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (X)