As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLIGHT 2351 - THE CREW REPORTED A SPOILER FAIL MESSAGE IN FLIGHT. SPOILER OPEN MESSAGE ON THE EICAS. THE AIRCRAFT RETURNED TO CLE AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE LEFT INBOARD SPOILER PROXIMITY SWITCH. OPERATIONAL CHECKS WERE GOOD.