As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO DFW DUE TO THE FLIGHT CREW REPORTING A YELLOW HYDRAULIC RESERVOIR LOW LEVEL ECAM IN FLIGHT. THE AIRCRAFT LANDED SAFELY AT DFW AND WAS TOWED TO THE GATE DUE TO THE LOSS OF NOSE WHEEL STEERING. MAINTENANCE FOUND THE #2 ENGINE PYLON HIGH PRESSURE HYDRAULIC LINE LEAKING AND REPLACED IT. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.