As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PUSHBACK, THE NR 1 ENIGNE OIL FILTER MESSAGE WAS DISPLAYED. AIRCRAFT RETURNED TO THE GATE AFTER ENGINE SHUTDOWN AND RESTART. MESSAGE DID NOT REPEAT. GROUND MAINTENANCE INSPECTED AND REPLACED THE ENGINE OIL FILTER. NO CONTAMINATION WAS FOUND.