2020 Ram 3500 fuel system problems
57 of the 116 complaints owners filed with NHTSA about the 2020 Ram 3500 name the fuel system (NHTSA’s “Fuel/Propulsion System” heading — fuel tanks, lines, pumps and injection — and on an EV, the propulsion battery and motors). Filed under the same heading: 85 manufacturer bulletins, 1 recall, 2 NHTSA investigations. Every figure below is a document in a federal file, linked; none is a failure rate, and none is a verdict on any one car.
What owners filed about the fuel system
Source: NHTSA complaint database1 of the 57 reports a crash · 1 a fire · 0 injuries. Self-reported, unverified.
Filed per year: 2020: 6 · 2021: 23 · 2022: 13 · 2023: 8 · 2024: 3 · 2025: 2 · 2026: 2
Half of the 23 owners who gave an odometer reading reported the fuel system problem between 7,000 and 30,000 miles. A median of reports, not the life of a part.
116 complaints in all about the 2020 Ram 3500, 2 filed in 2026. The whole picture, every system →
Counts are owner reports to NHTSA, not verified defects, and scale with how many of these were sold; nothing here is a rate. NHTSA groups complaints coarsely, so “Fuel/Propulsion System” means the same area of the vehicle, not one fault.
Across model years: Ram 3500 fuel system problems, every year on file →
In owners’ own words
Source: NHTSA complaint databaseFiled with NHTSA by the people who own these cars, about the fuel system. Quoted as written, with anything identifying removed; unverified reports — what was said, not a finding that it was true.
The contact owns a 2020 Ram 3500. The contact stated while driving 45 MPH, the vehicle lost motive power. The vehicle was restarted and the functionality returned however, the failure recurred after several seconds. There was no warning light illuminated. The vehicle was towed from the scene.
My 2020 Ram 3500 cummins 6.7 lost the injector pump (cp4.2) and i'm told it's about 15k to fix and will take 2 months to fix due to back ordered parts
I AM one of the many 19-20 hd Ram owners out there that have the plagued bosch cp4 fuel pump. It is essentially a time bomb waiting for off because when it goes it send metal throughout the fuel system making the vehicle inoperable. That is bad especially those of US that tow heavy.
I bought my truck just over a month ago and was told I had to add lubricant to my fuel in order to keep my fuel pump from blowing up, as well as only put in 'good diesel.' I know diesel can change from one gas station to another, but to add a lubricant in order to keep my fuel pump from blowing up on and brand new $80000 truck!
The 2019 to 2020 model year Ram 2500 heavy duty equipped with a 6.7l cummins diesel engine has a major safety issue that could cause a stall and increase the risk of a crash. The bosch cp4.2 fuel injection pump has a very high rate of sudden failure leading to immediate stoppage on the engine and engine braking system.
What is on file about the fuel system
Source: NHTSA recalls, investigations and manufacturer communicationsRecall filed under this heading
- 21V880000 HighNov 12, 2021 · 222,410 vehicles
- 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.
NHTSA investigations
- EA23001 High pressure fuel pump failureopened Mar 17, 2023 · open
- 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. During the investigation, ODI sought to determine if the related defect alle…
- PE21021 High pressure fuel pump failureopened Oct 14, 2021 · closed Apr 14, 2023
- 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…
85 manufacturer bulletins filed under this heading
The 0 newest are listed; every one is on the model year’s page. Quote the document number at a service desk — it is a diagnosis the maker has already written down.
Trouble codes named on this system
Codes a bulletin or an owner’s complaint about the 2020 Ram 3500 names on this model year; a code with a record of its own links it.
Common questions
Source: NHTSA complaint database, recalls and manufacturer communicationsAre fuel system problems common on the 2020 Ram 3500?
They are documented: NHTSA holds 57 owner complaints naming the fuel system on this model year (49% of everything owners filed about it), and 85 manufacturer bulletins, 1 recall, 2 NHTSA investigations are filed under the same heading. Whether it is a problem on one particular car is a diagnosis, not a count, and a count says nothing about how many were sold.
Is there a recall for the fuel system on the 2020 Ram 3500?
Yes — one campaign is filed under this heading: 21V880000. A recall is matched by VIN; check yours at nhtsa.gov/recalls.
When do fuel system problems show up on the 2020 Ram 3500?
Owners who gave an odometer reading reported it at a median of 22,000 miles; half of them between 7,000 and 30,000. That is when reports cluster, not the life of a part.
What does NHTSA's "Fuel/Propulsion System" heading cover?
Fuel tanks, lines, pumps and injection — and on an EV, the propulsion battery and motors. Owners choose the heading when they file, so it says which area of the vehicle the complaint is about, not which part failed.