DETROIT (AP) — Nissan will do a "service campaign" to fix nearly 200,000 Altima midsize cars because a suspension part can come loose from the frame due to corrosion.

The campaign falls short of a recall, but the U.S. National Highway Traffic Safety Administration is continuing an investigation into the problem that covers more than 2 million cars.

The campaign includes 2013 Altimas in 22 U.S. states and Washington, D.C., as well as 2013 and 2014 Altimas in Canada.

Owners will be notified in the fall to bring their vehicles in to have a rear lower control arm replaced.