As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - FLIGHT 2533, PRESSING THE RIGHT RUDDER PEDAL CAUSES THE AIRCRAFT TO TURN TO THE LEFT. PRESSING THE LEFT RUDDER PEDAL CAUSES THE AIRCRAFT TO TURN RIGHT. THE STEERING TILLER WORKS NORMALLY. RETURNED TO THE GATE. MAINTENANCE REPLACED THE RUDDER PEDAL INPUT COMMAND MODULE (RVDT). OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.