As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA- ON FLIGHT 2453, DURING TAXI OUT, RECEIVED A CROSSFLOW PUMP CAUTION MESSAGE. RETURNED TO THE GATE. MAINTENANCE CLEARED THE MESSAGE PER THE SERVICE LETTER 28-007. OPERATIONAL CHECKS GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.