As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAKEOFF WARNING HORN SOUNDED AS THROTTLES WERE PUSHED FORWARD FOR TAKEOFF. ABORTED TAKEOFF AND RETURNED TO GATE. FOUND PARKING BRAKE SWITCH HAD FAILED, FERRIED AIRCRAFT TO MSP. REPLACED PARKING BRAKE SWITCH. OPERATIONAL CHECK OK, AIRCRAFT RETURNED TO SERVICE.