As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT, SPEED LESS THAN 10KTS, AIRCRAFT SWERVED TO THE LEFT (UNCOMMANDED) AND DID NOT RESPOND TO STEERING IMPUTS. STOPPED AIRCRAFT USING BRAKES, RECEIVED ELECTRONIC CENTRALIZED AIRCRAFT MONITORING MESSAGE: WHEEL N/W STEERING FAULT. MAINTENANCE REMOVED AND REPLACED SERVO-CONTROL MODULE AND PERFORMED FUNCTIONAL TEST OF NOSE WHEEL STEERING IN ACCORDANCE WITH THE REQUIREMENTS OF A319 AMM 32-51-51-400-001, 32-51-00-720-003 AND 32-51-00-720-004.