As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- ON FLIGHT 2431 ABORTED TAKEOFF DUE TO RIGHT REVERSE CAUTION MESSAGE APPEARED DURING POWER APPLICATION FOR TAKEOFF. MESSAGE WENT AWAY WHEN THRUST LEVERS RETRACTED TOWARDS IDLE. FOUND FAULT GROUND RELAY AK30 RELAY CLOSED. GROUND RAN AIRCRAFT AND PERFORMED OPERATIONAL TEST OF THRUST REVERSER. NO PARTS REPLACED. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.