As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE OFF ROLL, RECEIVED A NR 2 ENGINE N2 OVERSPEED AND EGT OVER LIMIT WARNINGS. TAKE OFF ABORTED AT APPROXIMATELY 50 KNOTS. REMOVED AND REPLACED THE NR 2 ENGINE N2 SENSOR IAW AMM 77-11-20-000-002-A6. ACCOMPLISHED ENGINE RUN IAW AMM 71-00-00 AND LEAK CHECKED NORMAL. AIRCRAFT WAS GROUNDED.