As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG ON FLIGHT 2357- DE-ICE PRESSURE CAUTION LIGHT IN FLIGHT. ISOLATED SYSTEM AS PER CHECKLIST. ALL BOOT INDICATIONS WERE NORMAL. DE-ICE PRESSURE INDICATED 17 PSI ON NR 1 AND 21 PSI ON NR 2. OPERATIONAL TEST AS PER AMM 30-11-16-710-801 AND 30-11-31-710-801. NO DEFECTS NOTED. NO PARTS REPLACED. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.