As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NR 1 ENGINE OIL PRESSURE INDICATION WAS ABOVE THE RECOMMENDED MAXIMUM AND FLUCTUATING ON TAKEOFF ROLL. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE REPLACED THE OIL PRESSURE INDICATOR WITH A SERVICEABLE UNIT.