As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 7941 - DEN - CREW REPORTED NR 2 ENGINE ATTCS NO MARGIN MESSAGE ON THE EICAS WHEN POWER EVER WAS ADVANCED. MAINTENANCE PERFORMED A DOWNLOAD OF THE CMC AND FOUND NO DEFECTS OR RELATED MESSAGES, PERFORMED A GROUND PERFORMANCE RUN IN ALT TO AND TO 1 WITH NO DEFECTS NOTED.