As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - ROLL SPOILER INBOARD CAUTION LIGHT ILLUMINATED IN FLIGHT. EMERGENCY CHECKLIST WAS COMPLIED WITH. LIGHT REMAINED ILLUMINATED. REPLACED #1 HYDRAULIC ROLL SPOILER PRESSURE SWITCH. OPERATIONAL CHECK IS GOOD. AIRCRAFT RETURNED TO SERVICE.