Mazda North American Operations is recalling 41,918 2009-2010 model-year Mazda6 sedans because of potential air bag malfunction, the National Highway Traffic Safety Administration reported.

The recall covers Mazda6 vehicles manufactured from Feb. 4, 2008, to Dec. 3, 2009.

The air bag control unit’s protective coating may not have been properly applied. As a result, moisture may damage the unit and lead to malfunction, NHTSA said.

“Failure of the ACU [air bag control unit] would illuminate the air bag warning light and prevent the air bags from deploying in the event of a crash, increasing the risk of injury,” NHTSA warned on its website.

Mazda dealers will replace the ACU, free of charge, to fix the problem. Replacement parts, however, aren’t yet available. Mazda will send interim notifications to owners beginning Oct. 3, and will mail a second notice when remedy parts are available.

Vehicle owners can reach Mazda customer service at (800) 222-5500. Mazda’s number for this recall is 9816H.