NHTSA Diesel Trucks

NHTSA Investigating Over 600,000 Ram Diesel Trucks Due To Stalling Engine

NHTSA Investigating Over 600,000 Ram Diesel Trucks Due To Stalling Engine

More than 600,000 heavy-duty pickups built by Ram models 2019 & 2020 are the target of a National Highway Traffic Safety Administration (NHTSA) investigation due to a faulty fuel pump. Only trucks powered by the 6.7-liter turbodiesel engine are affected. Complaints say that the trucks could stall and become immobile while traveling at speeds over 25 mph and resulting in the “permanent disablement of the vehicle.”

  • NHTSA has started an investigation on Ram trucks with diesel engines, following up on reports of a problem with the high-pressure fuel pump. The problem could cause stalling and loss of power while traveling at speeds above 25 mph.
  • The reported defect could affect 604,651 2019–2020 Ram 2500, 3500, 4500, and 5500 trucks with the 6.7-liter Cummins turbo-diesel engine, NHTSA said.
  • NHTSA has received 22 complaints about the issue and two field reports. The agency has not yet issued a recall.

The agency launched its probe last Thursday on October 14th and will focus on how widespread the presumed defect is, what exactly caused it, and any potential safety hazards relating to the issue. Some headway has already been made, however.

Diesel vehicles under investigation include all Ram 2500, 3500, 4500, and 5500 HD pickups from the 2019-2020 Model years. NHTSA could issue a recall as a result of the investigation. According to NHTSA and a report by the Detroit News, Stellantis (then Fiat Chrysler) was aware of the defect already and put out a warranty bulletin in November 2019 about the problem asking dealers to  “collect, monitor, and correct quality issues” with the trucks’ high-pressure fuel pumps.

NHTSA said that the high-pressure fuel pump is to blame; stalling occurs when the part fails. And the issue mostly happens above 25 mph and that the engine can’t be started again after it turns off. Stellantis said that they will be cooperating with the NHTSA fully, launching an investigation of its own for good measure. So we should have the next update soon, including the name of the supplier. In the meantime, you might want to keep a closer eye on how your HD Ram is running if it falls under the purview of the investigation.


At the Lemon Firm, we are a team of experienced attorneys who can help you recover the right compensation if you are experiencing any of these defects in your Dodge Ram. Why don’t you Contact Us today for a free consultation?

About the Author
Sepehr Daghighian is a partner with CCA that is well-versed in all aspects of lemon-law litigation. A 2005 graduate of Loyola Law School, Mr. Daghighian has been practicing litigation throughout the state of California for over 13-years. In this time, Mr. Daghighian has advocated on behalf of California consumers in hundreds of lemon law cases throughout our great state. Mr. Daghighian has also successfully tried numerous such cases to verdict in both Federal and State Court.