As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - CREW REPORTED RIGHT ENGINE START VALVE LIGHT ILLUMINATED DURING CLIMBOUT. REDUCED POWER AND LIGHT REMAINED ON. EMERGENCY DECLARED FLIGHT RETURNED ORD LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED ENGINE START VALVE AND STARTER SENSE FILTER ASSEMBLY. SYSTEM GROUND CHECK NORMAL OPERATION.