The National Highway Traffic Safety Administration (NHTSA), the federal agency within the Department of Transportation responsible for automotive safety, has opened a new investigation looking into a Ram defect that may not have been remedied by a previous recall.

The U.S. National Highway Traffic Safety Administration said on Monday it opened a recall query covering about 1.2 million Stellantis' Ram trucks over concerns related to the transmission.

The federal safety agency has received 14 vehicle-owner complaints and six death and injury reports connected to potentially faulty recall fixes.