The United manager is in hot water after failing to attend the mandatory post-match press conference at Old Trafford following the 2-1 defeat to Real Madrid in the second leg of the last-16 tie on March 5.
The offence can bring a touchline ban in extreme cases.
The Scot was furious with Turkish referee Cuneyt Cakir after he sent off United winger Nani for a high challenge on Alvaro Arbeloa, a decision which Ferguson felt swung the tie in Real's favour.
Assistant manager Mike Phelan said at the time Ferguson was too "distraught" to face the media.
Ferguson subsequently said it was "hard to keep faith" in the face of such incidents, and that it was the third time during his tenure United had been knocked out of the Champions League as a direct result of what he felt were poor decisions.
In addition to a touchline suspension, Ferguson could also be fined or warned about his future conduct.
Nani will definitely receive a one-match suspension for the red card but UEFA does have the power to increase that ban, although it would be a surprise if it was extended.