As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- FLIGHT 2594 (PDX-BIL). ON TAKEOFF ROLL RECEIVED A "CONFIG RUDDER" WARNING. RUDDER TRIM WAS SHOWING CENTERED AND IN THE GREEN. "TAKEOFF CONFIG OK" WAS DISPLAYED AT THE START OF THE TAKEOFF ROLL. RETURNED TO THE FIELD AND ACCOMPLISHED A UNEVENTFUL LANDING. MAINTENANCE DETERMINED IT TO BE A INDICATION PROBLEM. REPLACED THE AILERON/RUDDER TRIM POWER SUPPLY. OPERATIONAL AND CHECKS FLIGHT ARE GOOD. AIRCRAFT RETURNED TO SERVICE.