As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, THE NR 1 ENGINE OIL PRESSURE INDICATION DROPPED TO 15 PSI. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE REPLACED THE OIL PRESSURE TRANSMITTER AND THE OIL PRESSURE INDICATOR. AN ENGINE RUN WAS PERFORMED TO HIGH POWER WITH NORMAL INDICATIONS.