As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD FLT 5912 THE CREW REPORTED THE STEERING WAS UNRESPONSIVE WHILE TAXIING. THE AIRCRAFT STARTED PULLING RIGHT AND GRINDING NOISE CAME FROM THE NOSE WHEEL AREA. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE NOSE GEAR FEEDBACK POTENTIOMETER. ADJUSTED AND PERFORMED OPERATIONAL CHECKS. THE AIRCRAFT WAS RELEASED FOR SERVICE.