As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW STARTED ENGINES, ALL INDICATIONS WERE NORMAL. AIRCRAFT WAS TAXIED TO THE ACTIVE RUNWAY. UPON REACHING THE RUNWAY THE ENGINE INSTRUMENTS WERE CHECKED AND DISCOVERED THE RT OIL TEMP INDICATOR WAS READING ZERO DEGREES. THE AIRCRAFT WAS TAXIED BACK AND MAINTENANCE WAS NOTIFIED.