As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YKM - ON FLIGHT NUMBER 2187, ON TAXI OUT THE NR 1 ENGINE OIL TEMP ROSE ABOVE THE RED ARC. UPON RETURNING TO THE GATE, THE NEEDLE QUICKLY RETURNED TO A NORMAL TEMP. MAINTENANCE CLEANED AND RESEATED CANNON PLUG ON NR 1 OIL TEMP SENSOR. GROUND RAN ENGINE FOR 10 MINUTES AT VARIOUS POWER SETTINGS, NR 1 OIL TEMP GAUGE OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.