As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW RETURNED TO ATL DUE TO RIGHT ENGINE "HIGH OIL PRESSURE" INDICATION. MAINTENANCE REPLACED THE RIGHT ENGINE OIL PRESSURE REGULATOR, PRESSURE TRANSMITTER, AND OIL ECK OF FILTER. ALSO CHECKED THE OIL PRESSURE SENSE LINE FOR OBSTRUCTIONS AND FOUND THAT IT WAS CLEAR. AN ENGINE RUN-UP TO TAKEOFF POWER SHOWS THAT THE OIL PRESSURE NOW INDICATES PROPERLY (2010-D0946) (DLM88102116).