As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4005 A LANDING GEAR DISAGREE WARNING ON EICAS APPEARED AFTER THE LANDING GEAR HANDLE WAS MOVED INTO THE UP POSITION AFTER TAKEOFF. ALL THREE LANDING GEAR INDICATOR LIGHTS INDICATED YELLOW. THE CREW DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE LANDING GEAR CONTROL LEVER IAW EMB-145 AMM 32-32-02. AIRCRAFT RETURNED TO SERVICE.