Maualuga was fined by the NFL on Tuesday under the league's substance abuse policy. He will forfeit two weeks' worth of his 2010 bonus, as well.
The second-year player from Southern California pleaded guilty to drunken driving in February and received a suspended sentence. Police said he hit a parking meter and two parked cars in northern Kentucky. He was charged with drunken and careless driving.
The NFL was considering a one-game suspension for Maualuga but decided against it after listening to the arguments of his attorney, David Cornwell, a league source told ESPN NFL Insider Adam Schefter.
The 2009 second-round pick had a productive rookie season for the reigning AFC North champions, recording 63 tackles and one sack.
But the Jan. 29 incident put a blemish on his fast start. He ended up with two years' probation and a revoked driver's license.
He underwent treatment at a Charleston, S.C., facility while working to improve his left ankle that was fractured in December.
Maualuga is the second Bengal to escape suspension this summer. The first was running back Cedric Benson.
Commissioner Roger Goodell said in a statement last Friday that he's satisfied Benson understands his responsibilities as an NFL player and a public figure. Benson met with Goodell and other league officials two weeks ago.
Police in Austin, Texas, charged Benson with misdemeanor assault last month for allegedly punching a bar employee in the face. Benson has denied the charge.
Information from ESPN.com's James Walker and The Associated Press was used in this report.
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