What was found
ON TAXIING OUT, FLIGHT CREW NOTED NR 2 ENGINE OIL PRESSURE DROPPED TO 'ZERO' IN ENGINE START. FLIGHT CREW ELECTED TO RETURN TO GATE FOR CORRECTIVE ACTION. AIRCRAFT RETURNED TO GATE WITHOUT INCIDENT. MAINTENANCE PERSONNEL FOUND CONNECTORS LOOSE ON NR 2 OIL PRESSURE TRANSMITTER. TIGHTENED CONNECTORS ON NR 2 OIL PRESSURE TRANSMITTER. CHECKED GOOD ON ENGINE RUN. AIRCRAFT RETURNED TO SERVICE. (X)