As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG - FLIGHT 2597 - RECEIVED A RIGHT ENGINE DEGRADE CAUTION MESSAGE WHEN TURNING ON THE WING ANTI-ICE. RETURNED TO THE GATE, MAINTENANCE CHECKED THE MDC FAULT HISTORY AND NOTED T2 A/I RELAY FAILED CLOSED. COMPLIED WITH FIM TASK 72-00-00-801-804-A01. CHECKS GOOD, MESSAGE DID NOT COME BACK. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.