As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX ON FLIGHT 2534- LEFT AND RIGHT FUEL BOOST PUMPS CYCLED CONTINUOUSLY AT FLIGHT LEVELS 350 AND 370. CYCLING STOPPED DURING DESCENT AFTER POWER REDUCTION. REMOVED AND REPLACED BOTH PRIMARY EJECTOR PRESSURE SENSORS. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.