Which parts fail
Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2020 Ram 3500 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2020 Ram 3500. The contact stated while hauling his fifth-wheel travel trailer driving up a hill the vehicle lost all power. The contact stated he had to maneuver over several lanes of traffic to move off the road safely. The police department was contacted and had the vehicle towed. The tow truck driver had to unhitch the trailer from the contact's vehicle to tow the truck to a dealer. The vehicle was towed to the dealer and diagnosed with a fuel sensor failure. The fuel sensor was replaced. The vehicle failed to start and was diagnosed with a fuel injection pump failure which had imploded sending metal fragments throughout the whole fuel system and into the fuel tank. The entire fuel system including the fuel tank and all fuel parts needed to be replaced. …
The contact owned a 2020 Ram 3500. The contact stated that the vehicle would surge whenever he depressed the accelerator pedal while driving. There were no warning lights illuminated. The contact then received notification of NHTSA Campaign Number: 21V880000 (Fuel System, Diesel). The contact notified several unknown dealers of the failure. The dealers informed the contact that though the failure was associated to the recall, they could not assist as the manufacturer had not authorized them to repair the vehicle. The contact then inquired assistance with obtaining the parts for repair and the dealer informed the contact that the manufacturer did not authorize them to sell the parts for repair. The manufacturer was notified of the failure and informed the contact that they would not assist as the vehicle was safe to drive. The vehicle was not diagnosed or repaired. …
As I was preparing to travel for the holidays com ng up, I was traveling to Texas to see family. I was driving around 65 mph when suddenly the truck started jerking and slowing down when the gas pedal would not give it power. The car behind slammed the brakes and in order to avoid hitting me had to went the the side of the highway. Before coming to a complete stop the truck a 2020 ram 3500 shut off and will not come off. The tow truck was able to scan the truck and the codes are for low fuel pressure and fuel pump. This was a very scary situation because I'm with all my family and not only did I put them in danger by this truck failing with out a notice of any kind but also put others like the vehicle behind in danger because the truck failed. I have look up and this seems to be a common issue with all the "new ram trucks" not sure why there is no recall yet. …
The contact owns a 2020 RAM 3500. The contact stated while her husband was making a right turn, the vehicle began to stall. The contact stated do not turn off the vehicle until arriving at destination warning message was illuminated. The driver was able to continue driving under 15 MPH until arriving at a local dealer. The local dealer was unable to duplicate or diagnose the cause of the failure. The contact was informed that a specialist was needed to diagnose the vehicle. The contact stated that the dealer called back 2 days later and stated that some unknown cables needed to be replaced. The vehicle was repaired but continued to experience the same failure. The contact stated that the failure had been experienced a third time. The VIN was associated with NHTSA Campaign Number: 21V880000 (Fuel System, Diesel) and 21V398000 (Wheels). …
The contact owns a 2020 Ram 3500. The contact received notification of NHTSA Campaign Number: 21V880000 (Fuel System, Diesel) however, the part to do the recall repair was unavailable. The local dealer was contacted and it was confirmed that the part was not available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact stated that the vehicle experienced hard starting and a loss of power while driving at various speeds. The vehicle was taken to the local dealer who diagnosed that the high-pressure fuel pump had failed and needed to be replaced; however, the part was not yet available. The failure mileage was 5,900. Parts distribution disconnect.
The contact owns a 2020 Ram 3500. The contact stated that while driving 75 MPH, the vehicle was shaking and then lost motive power. The check engine warning light later illuminated. The vehicle was towed to the dealer, where NHTSA Campaign Numbers: 21V880000 (Fuel System, Diesel), 21V398000 (Wheels), and 22V904000 (Structure) were performed. However, the failure recurred. The vehicle was then towed to Gulfgate Dodge Chrysler Jeep Ram (7250 Gulf Fwy, Houston, TX 77017), where it was diagnosed that the fuel line had failed, and the fuel injectors and fuel rail needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 150,000.
The contact owns a 2020 Ram 3500. The contact received notification of NHTSA Campaign Number: 21V880000 (Fuel System, Diesel) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving at an undisclosed speed, the vehicle hesitated while accelerating. The dealer was made aware of the failure and confirmed that parts were not yet available. The vehicle was not repaired. The manufacturer was made aware of the failure and confirmed that parts were not yet available. The failure mileage was approximately 30,000. Parts distribution disconnect.
The contact owns a 2020 Ram 3500. The contact stated that while driving at 65 MPH, the vehicle suddenly experienced reduced speed and hesitation, and there was a rattling noise coming from the engine as the RPMs increased above 1,500. The vehicle was driven slowly to a local dealer, where the contact was informed that the high-pressure fuel pump (HPFP) had likely failed. The exact cause of the failure had not yet been determined, and the vehicle was not repaired. The contact stated that the vehicle was previously serviced under NHTSA Campaign Number: 21V880000 (Fuel System, Diesel) and was experiencing the same failure listed in the recall. The failure mileage was 300,000.
The contact owns a 2020 Ram 3500. The contact stated that while depressing the accelerator pedal, the vehicle hesitated before accelerating. There were no warning lights illuminated. The contact received notification of NHTSA Campaign Number: 21V880000 (Fuel System, Diesel) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure mileage was approximately 22,000. Parts distribution disconnect.
The contact owns a 2020 Ram 3500. The contact stated that while driving at an unknown speed, the vehicle independently went into limp mode and would not accelerate above 20 MPH. Due to the failure, the contact took the vehicle to a dealer where they discovered that a defective fuel pump had caused metal shavings to enter the fuel line, fuel rail, fuel tank, and fuel injectors. The manufacturer was not notified of the failure. The vehicle was repaired. The failure mileage was 111,363.
Related recalls
Fuel system, diesel › Delivery › Fuel pump
Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 2500, 3500 pickup trucks, and Ram 3500, 4500, and 5500 cab chassis vehicles equipped with Cummins 6.7L Turbo Diesel engines. The High Pressure Fuel Pump (HPFP) may fail, resulting in a sudden engine stall without warning.
Remedy: Dealers will replace the HPFP, update the Powertrain Control Module (PCM) software, and inspect and replace additional fuel system components as necessary, free of charge.
NHTSA investigations
High pressure fuel pump failure
The Office of Defects Investigation (ODI) opened PE21-021 on October 14, 2021 to investigate allegations of stall/loss of motive power as a result of high pressure fuel pump failures in certain model year (MY) 2019-2020 RAM 2500, 3500, 4500, and 5500 heavy duty trucks equipped with 6.7L Cummins turbodiesel engines.On November 12, 2021, FCA filed vehicle recall 21V-880 and equipment recall 21E-094 on the subject…
High pressure fuel pump failure
The Office of Defects Investigation (ODI) opened PE21-021 on October 14, 2021, to investigate incidents alleging a stall/loss of motive power as a result of high-pressure fuel pump failures in certain model year (MY) 2019-2020 Ram 2500, 3500, 4500, and 5500 heavy duty trucks equipped with 6.7L Cummins turbodiesel engines.
Fuel System complaints in other 3500 years
Frequently asked questions
How common are fuel system problems on the 2020 Ram 3500?
NHTSA has 57 complaints about the fuel & propulsion system of the 2020 Ram 3500, 49% of the model year's 116 complaints. The component named most often is delivery › fuel pump (1 mentions).
Is there a recall for 2020 Ram 3500 fuel system problems?
Yes — NHTSA recall 21V-880 (fuel pump, Nov 12, 2021). Recall repairs are free at authorized dealers.
At what mileage do 2020 Ram 3500 fuel system problems start?
Half of the complaints with a recorded mileage happened before about 22,000 miles, and 57% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 0 injuries to fuel & propulsion system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.