England's 29-10 loss to Ireland on Saturday served as the first match of his suspension, and he will also sit out the final warm-up fixture against Fiji this coming weekend.
Farrell faced a second disciplinary panel after World Rugby appealed against the decision to downgrade the his red card to yellow for a dangerous tackle on Wales loose-forward Taine Basham (23) during England's 19-17 warm-up win on Aug. 12.
Last week, the judicial committee verdict that there were mitigating circumstances in the collision, in which his shoulder struck the head of Basham, caused an uproar among pundits and former players, as well as player welfare advocates.