The FA has given the Portuguese until 6pm on Thursday to respond to the charge.
There were a number of controversial incidents in the game, none more so than Chelsea’s disputed equaliser, and Mourinho was sent to the stands by referee Anthony Taylor after losing his cool.
The nature of the offence means Mourinho is most likely to face a fine, rather than a ban.
Mourinho went to sit with the fans, making the day of those he sat next to, but his own frustration was clear.
Speaking prior to the FA’s announcement, Mourinho insisted he did not understand his sending off.
“I don’t know the reason why the referee stopped me doing my work,” he said. “Until that moment (when he is informed why) I’m not going to make any comment.”
While he would not comment on his own conduct, Mourinho had plenty to say about that of Cardiff.
Eden Hazard scored the controversial equaliser after Samuel Eto’o dispossessed Cardiff’s David Marshall as the goalkeeper bounced the ball, contrary to Fifa rules.
That brought lengthy complaints from the Welsh club, but Mourinho had little sympathy.
Speaking on Chelsea’s arrival in Germany at Dusseldorf airport, ahead of tonight’s Champions League Group E clash at Schalke in Gelsenkirchen, Mourinho said: “If I was in that game and I was paying my ticket, I would be worried with the fact that every time the ball was out or stopped and our opponent had to put the ball back in the game, it took a median (average) of 21.5 seconds.
“That is a waste of money. When you multiply that by the number of times the game was stopped, you pay for 90 minutes but you see 55 or 60. For me, that’s breaking the rules.”
Meanwhile, John Terry hopes to make it third time lucky in the Champions League after missing a penalty in his first final and being absent from the second through suspension. Speaking ahead of tonight’s game against Schalke, Terry spoke of his desire to make amends for his penalty miss in the shootout defeat to Manchester United in 2008.
On his most recent previous visit to Germany, Terry lifted the European Cup in Munich despite taking no part in another shootout, when Chelsea beat Bayern Munich, following his semi-final dismissal at Barcelona.
Terry said: “I played in one (final) and was very disappointed in the one in Moscow, but delighted for the side to go on and win it the way we did.
“But as an individual you want to be playing in those games, in those moments and that’s what I’m aiming to do.”
Chelsea face a Schalke side in form tonight and despite singling out the Blues as “one of the favourites for the title”, manager Jens Keller believes there is no reason for his side to feel inferior.
“Just a glance at Group E as well as our recent results in the Bundesliga give us self-confidence, of course,” Keller said.