As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OKC - ON TAXI FOR FLIGHT 4188, RECEIVED A X-FLOW PUMP AMBER CAUTION MESSAGE FOLLOWED BY A AUTO XFLOW INHIBIT MESSAGE. RETURNED TO THE GATE. MAINTENANCE CLEARED THE STATUS MESSAGE IAW FIM TASK 28-13-00-810-A01. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.