As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED AFTER RETRACT GOT BRAKE OVERHEAT MESSAGE. RE-EXTENDED LANDING GEAR TO COOL, GEAR WOULD NOT RETRACT. AIRCRAFT AIR RETURNED TO EWR. MAINTENANCE OPS CHECKED SYSTEM GOOD. GEAR WOULDN''T RETRACT IN FLIGHT BECAUSE AIRCRAFT WAS GOING OVER 200 KNOTS. GEAR CHECKED OK FOR SERVICE. AIRCRAFT RETURNED TO SERVICE.