As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - CREW REPORTED, THRUST RATING WENT BACK TO "E-TO" AFTER CLIMB THRUST WAS SELECTED. WOULDN'T ACCEPT ANY OTHER THRUST RATING. AIRCRAFT AIR RETURNED BACK TO IAH. LANDING UNEVENTFUL. MAINTENANCE TROUBLESHOT AND REMOVED AND REPLACED THRUST RATING SELECT MODULE IAW EMB145 AMM 76-12-02. OPS CHECK SYSTEM GOOD. AIRCRAFT RETURNED TO SERVICE.