As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED DURING DESCENT RIGHT HYDRAULIC PRESSURE LOW LIGHT ILLUMINATED WHEN SELECTING PUMP TO HIGH. EMERGENCY DECLARED FLIGHT LANDED DFW WITHOUT INCIDENT. INITIAL INSPECTION AT GATE SHOWED NO FLUID LOSS, QUANTITY OK. AIRCRAFT REMOVED FROM SERVICE. REPLACED RIGHT HYDRAULIC PUMP SELECT SWITCH. SYSTEM GROUND CHECK NORMAL OPERATION.