As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED DURING CLIMB AUTO SPOILER DO NOT USE LIGHT ILLUMINATED FOLLOWED BY LEFT MAIN GEAR RED LIGHT. SEVERAL MINUTES LATER GEAR DOOR OPEN AMBER LIGHT CAME ON. FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LANDING GEAR CONTROL VALVE THAT WAS LEAKING. SYSTEM GROUND CHECK NORMAL OPERATION.