As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN BACK TO IAH DUE TO FLIGHT IDLE STOP OPEN LIGHT ILLUMINATED ON INITIAL CLIMB. CAPTAIN DECIDED TO RETURN TO IAH. NO EMERGENCY DECLARED. CHECKED FLIGHT IDLE STOP SYSTEM PER SAAB AMM 76-10-60-01. PERFORMED MULTIPLE GEAR SWINGS. COULD NOT DUPLICATE DISCREPANCY. SYSTEM FUNCTIONS NORMALLY AT THIS TIME.