What was found
IAH - FLIGHT 2288, THE CREW REPORTED THAT FUEL PUMP 2B STAYED ON EVEN WHEN CROSSFEED LOW 2, 2A, OR 2C WERE SELECTED. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED FUEL PUMP 2B CONTACTOR K0121, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.