As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 2581 - EWR - CREW REPORTED THAT AFTER TAKEOFF, THE LANDING GEAR FAILED TO RETRACT FOR ABOUT 2 MINUTES AFTER THE GEAR HANDLE WAS SELECTED UP. EWR MX PERFORMED OPERATIONAL CHECKS OF THE LANDING GEAR SYSTEM (EXTENSION & RETRACTION) IAW EMB AMM 32-30-00 AND COULD NOT DUPLICATE THE PROBLEM. NO FAULT FOUND DURING TEST. ACFT WAS APPROVED TO RETURN TO SERVICE.