What was found
AIRCRAFT WAS GROUNDED: AFTER TAKE OFF. NOSE WHEEL STEERING ECAM FAULT OCCURED. FLIGHT CONTINUED TO ORD AND THE CREW DECLARED AN EMERGENCY COMING INTO ORD. THE AIRCRAFT LANDED SAFELY. AFTER LANDING MAINTENANCE RESET THE NOSE WHEEL STEERING SYSTEM BY CYCLING THE ANTI-SKID / NOSE WHEEL STEERING SWITCH AND THE FAULT CLEARED ALLOWING THE AIRCRAFT TO TAXI TO THE GATE UNDER ITS OWN POWER.. MAINTENANCE ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK OF THE NOSE WHEEL STEERING SYSTEM PER AMM 32-51-00 WITH NO FAULTS NOTED.