Nearly 343,000 Ram pickup trucks are being recalled by Fiat Chrysler worldwide because the air bags may not inflate in a crash.

The recall covers the Ram 1500 mainly from the 2019 model year, although the company has a small number of 2020 models.

Fiat Chrysler says a software error can inadvertently disable the air bags and a device that tightens seat belts before a crash. FCA doesn't know of any crashes or injuries and says the problem is rare.

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The company said its research indicates "the potential for such an event is highly remote," according to statement. "Further, the Company is unaware of any related injuries or accidents," the statement said.

Nearly one-third of the 2019 U.S. models are still at dealers.

Most of the recalled trucks are in North America.

Owners will be notified starting July 20. Dealers will either replace computers that control the air bags or update software. Truck owners can also call 1-800-853-1403 if they have questions, Fiat Chrysler said.