As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED A HYD EDP 2A CAUTION MESSAGE EN ROUTE TO DTW. MAINTENANCE REMOVED AND REPLACED THE RT ENGINE DRIVEN HYDRAULIC PUMP IAW CRJ700 AMM 29-11-01-000-801-A01 & 29-11-01-400-801-A01. OPERATIONAL AND LEAK CHECKS WERE GOOD. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.