2020 Ram 2500 fuel system problems

Filed Jan 28, 2026 · Engine, Fuel system · AK

Def pump failed twice with this vehicle and with that it does not allow the vehicle to run any faster than 5 mph after the countdown ends. Unknown how the exhaust being plugged and service was done to clean the exhaust ended up having the fuel pump and turbo charger needing replaced. Not sure if they went hand in hand and one causing the other. So far the vehicle only has almost 78,000 miles on it. Change oil and fuel filters at the vehicles scheduled computer system reports on the vehicle. I was having issues from service center having trouble resetting the exhaust system, which they said the system was not sealing properly. Took them a couple of days to get part from dealership to get it to seal and reprocessed the test which they said passed exhaust reset. That would explain the poor fuel rating of only getting 9 miles per gallon. If there was a complete fuel pump failure, not sure if that would compare to this being a safety issue. Not sure how engine would react, due to it completely failing or if the turbo would cause the vehicle to be unsafe. The vehicle is currently at dealership and only 1 out of the 3 are even available to fix this problem. Def pump is available, but unknown when the others will arrive. Service shop said it could be 3 weeks or 8 months for parts to come in. Due to being a back ordered item. Spent $70k for this vehicle, just to have it spend over 2 months in the shop. I do my own oil and fuel filter changes, due to it being faster and cheaper than any dealer or shop.

Filed Aug 7, 2025 · Engine, Fuel system · CA

Subject: Fuel System Failure Resulting in Engine Damage – 2020 RAM 2500 Pickup VIN: [XXX] Complaint Summary: I am submitting this complaint to formally report a dangerous and costly fuel system defect in my 2020 Dodge Ram 2500 Pickup (VIN: [XXX] ) that has resulted in catastrophic engine damage. Although Chrysler has issued a recall for the high-pressure fuel pump (HPFP) in many 2020 Ram trucks equipped with the 6.7L Cummins engine, I was told that my vehicle was not included in the recall—even though it exhibits all the classic symptoms of HPFP failure. This is a safety hazard and a potential emissions violation. Details of the Incident: In June 2025, I brought my truck to Tracy Chrysler Dodge Jeep RAM after experiencing engine misfires, loss of power, and a knocking noise. The dealership diagnosed a P0303 cylinder misfire and noted a fuel smell in the engine oil, as documented in repair order #[XXX]. Despite extensive diagnostic work—including compression tests, leak-down, and injector swaps—the misfire remained unresolved, and a tapping noise persisted. The technician explicitly noted fuel contamination in the oil and suspected internal engine damage due to a fuel system issue. To further investigate, I submitted an oil sample to Blackstone Laboratories. The lab confirmed the engine oil was heavily diluted with diesel fuel—over 10% fuel contamination, which reduced the viscosity from 5W40 to the equivalent of 5W20. This is consistent with HPFP failure leaking fuel into the crankcase. The oil report also noted excessive steel wear and recommended immediate oil change and fuel system inspection. At no time was a check engine light present, nor was there a clear diagnostic code for HPFP failure. Chrysler continues to deny responsibility even though the evidence clearly points to a failed HPFP—a well-documented issue for this engine model and year. The cost of diagnosis and parts alone has exceeded $4,000, and the engine is likely destroy INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA

Filed May 5, 2025 · Electrical, Engine · WI

Vehicle randomly shuts off during normal operation. Same as if the Start / Stop button were activated. Vehicle coasts until it self applies the emergency brake at about 3mph causing a sudden, jerky complete stop. Switches itself to Park. Dash indicates “sterp on brake to restart”. Vehicle restarts normally but may randomly shut down again. Safety risk is loss of steering, loss of power brake control, and total loss of power in traffic. Taking it to dealer today. Vehicle has not been inspected by anyone yet. No messages or warning lights display. This is a recent problem but recurring with increasing frequency.

Filed Jan 29, 2025 · Fuel system · 126,513 miles · FL

The contact's husband owns a 2020 Ram 2500. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed that the diesel particulate filter had failed due to the high-pressure fuel pump (HPFP) failure, which caused metal shavings to enter the fuel system. The dealer determined that the HPFP and the entire fuel system needed to be replaced. The dealer informed the contact that the manufacturer had offered to partially cover the repair cost through goodwill assistance. The vehicle was not repaired. The contact stated that the vehicle was previously repaired under the federal safety agency Campaign Number: 21V880000 (Fuel System, Diesel); however, the recall repair failed to fix the failure. The manufacturer was notified of the failure and a case was filed; however, the manufacturer had failed to respond to the contact's follow-up emails and calls. The failure mileage was approximately 126,513.

Filed Dec 7, 2023 · Engine, Fuel system · WA

There is a known issue with the vehicle surging during normal driving situations. Doge has an article about this but will not address or fix the issue. Their article states that it’s possible that this will not create a code. I have 42000 miles on this engine.

Filed Aug 29, 2023 · Fuel system · 35,000 miles · AL

The contact owns a 2020 Ram 2500. The contact stated that after refueling, the vehicle experienced reduced power and sputtering before the vehicle stalled. The vehicle was towed to the local dealer and was diagnosed with a faulty fuel injector. The fuel injector was replaced but the failure eventually recurred. The vehicle was taken back to the dealer who discovered metal shavings in the fuel pump and advised that the fuel pump needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was provided. The contact was informed that the VIN was not included in the federal safety agency Campaign Number: 21V880000 (Fuel System, Diesel). The contact stated that the vehicle had experienced that failure listed in the recall. The failure mileage was 35,000.

Filed Aug 10, 2023 · Fuel system · 93,000 miles · CA

The contact owns a 2020 Ram 2500. The contact stated while driving 55 MPH and towing a 2,500-pound trailer loaded with a 9,000-pound vehicle in hot weather, the MIL warning light illuminated and the message "Service DEF System - See Dealer" was displayed intermittently. Several unknown dealers were notified of the failure and the contact was informed that the VIN was not included in Manufacturer Campaign Number: ZD4. The vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure but offered no assistance since the VIN was not under recall. The failure mileage was approximately 93,000.

Filed Jun 5, 2023 · Engine, Fuel system · WA

My name is [XXX]. I have a 2020 Ram Laramie. I purchased the truck June 2nd 2022. So then, my truck did not come with a fitting spare tire. Currently I have 40/13.5r17 on the vehicle. That the manufacturer placed with this truck when I purchased it. The spare that came with the truck, is a 18 inch spare. That doesn’t fit my truck. Also it’s a major safety hazard. My left front tire split on the side so I went to use my spare and it was a wrong tire. Also, I purchase the vehicle with only 17000 miles on it, and No personal owners. Only dealerships. I paid $135,000 cash for it on the spot. Only had it 1 year. Also, now my truck won’t start. Something is wrong with my fuel pump and batteries or something. There suppose to come get it today. I live 30 miles up the mountain in WA state. So I do not do a whole turn of driving. I’m not sure what’s wrong, but I’m kinda stuck without a vehicle now, til it gets fixed I suppose. But I thought I’d let you know, so you can double check you guys products and make sure there now like expired parts or something. Thank you and have a nice day. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Filed Apr 28, 2023 · Fuel system · 100,000 miles · KY

The contact owns a 2020 Ram 2500. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed, and the vehicle made an abnormal sound and then shuddered. The vehicle was taken to the dealer to perform the federal safety agency Campaign Number: 21V880000 (Fuel System, Diesel); however, the dealer declined to perform the recall repair. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.

Filed Feb 17, 2023 · Fuel system · AZ

Manufacturer Recall NumberY78 the federal safety agency Recall Number21V-880 Recall StatusRecall Incomplete Summary A high pressure fuel pump failure may introduce internally failed component debris into the fuel system potentially causing fuel starvation. Safety Risk Fuel starvation may result in an unexpected loss of motive power, which can cause vehicle crash without prior warning. From this recall I have not been able to drive this truck for over a year. It sits in my driveway with a payment of nearly $1300 a month. I have reached out to the dealer since the day I received the recall notification in the mail and have been told couple weeks for over a year now. This is beyond acceptable for any person. It’s always one excuse after another with the dealers. Fuel pumps are in shortage, parts are on back order and then told we can only have one pump shipped to the dealer a month and the vehicles being sold on the lot take priority over already owned. I have been making these payments for a vehicle that has simply turned into a driveway ornament to say the least. Can you please investigate this issue as the truck is unsafe to drive and quite frankly I’m disgusted with purchasing an 80 thousand dollar truck for it to just sit.