2020 Ford F-350 SD engine problems

Filed May 21, 2026 · Engine, Fuel system · 126,136 miles · NY

The contact owns a 2020 FORD F-350. The contact stated while driving at an undisclosed speed, he had a loss of motive power and check engine warning light was illuminated when driving, almost causing an accident due to not being able to accelerate. The vehicle was taken to a dealer where it was diagnosed to have metal shavings in the combustion system. The contact received notification of the federal safety agency Campaign Number: 24V957000 (FUEL SYSTEM, DIESEL); however, the SSSC (Special Service Center assistance request) was declined by Ford agency (SSSC), due to the issue not having metal shavings although the dealer technician stated there were shavings. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 126,136.

Filed May 8, 2026 · Engine, Fuel system · FL

The component/system that failed or malfunctioned is the SCR (Selective Catalytic Reduction) NOx Catalyst Efficiency system, triggering DTC P20EE – SCR NOx Catalyst Efficiency Below Threshold (Bank 1). This issue began immediately after Ford Recall 24S78 (PCM software update) was performed on April 29, 2026 at Ferman Ford of Countryside. The truck had zero emissions or check-engine issues prior to the recall flash and was perfectly maintained to Ford standards with Howes diesel treatment every tank. The problem has been reproduced and confirmed multiple times by the dealer: After the May 4 PCM reprogram per TSB 21-2248 After replacement of both NOx sensors on May 5 (code returned in under 17 miles) After replacement of the DEF injector (code returned again) The dealer only performed one manual DPF regeneration instead of the two required by Ford SSM 49202 and pinpoint test RD15, and they did not complete the SCR Parameter Reset. They are now quoting an additional ~$2,000 out-of-pocket for a DPF replacement after partial goodwill assistance was approved. The vehicle has been repeatedly inspected and repaired by Ferman Ford. No independent inspection yet. Ford Customer Service has been contacted and partial goodwill was approved, but significant out-of-pocket costs remain. Warning lamps/messages (Service Engine Soon light + “exhaust emission control system is not operating as expected”) first appeared immediately after the April 29 recall PCM flash and have continued ever since. Safety risk: A loss of motive power, entry into limp mode, or reduced power while driving could result in a crash or inability to maintain highway speed. This appears to be a direct consequence of the Recall 24S78 PCM software update tightening emissions monitoring. All repair orders, photos of warnings, and supporting documents are attached for your review. There is 12. I was not able to upload the last of the documents.

Filed Dec 4, 2025 · Engine · MN

I have the 7.3 gas engine. It is now sounding like a typewriter. I've been told I could have a $8,000 to $13,000 repair or total engine replacement. My truck is just under 97,000 miles and this has been a known issue for the Job 1 engines. Ford is not taking ownership of these lifter/cam issue. I was told I could have my engine lock up on me while driving. I am autistic and have an autoimmune issue that cause me to have a disabilities. It does not seem right, that a long term, multiple Ford owner now could have their engine fail or lock up while I'm driving, not to mention I may need a complete new engine from this design error. From what I've read, the Job 2 of these engines they've enlarged oil recyclers or something to correct this issue. Can you help us that have this major saftey issue?

Filed Oct 30, 2025 · Engine · 35,000 miles · WV

The contact owns a 2020 Ford F-350. The contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The vehicle returned to normal functionality, but the failure became a regular occurrence. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the lifter in cylinder #2, resulting in damage to the engine. The contact was informed that the engine needed to be replaced. The contact stated that the original engine was replaced at 39,400 miles in 2022. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 35,000. The VIN was not available.

Filed Sep 24, 2025 · Engine, Fuel system · IL

I have sent in a previous complaint as our truck would die in the middle of the road, due to the fuel pump. It is unacceptable that Ford has not resolved the recall issue in 9 months. Our truck is needed daily for our business. Please make Ford take action.

Filed Jun 18, 2025 · Brakes, Engine · 106,000 miles · TX

The contact owns a 2020 Ford F-350. The contact stated that while driving and approaching a stop, the vehicle lost motive power, the brake pedal depressed and went to the floorboard, and the vehicle rolled into the intersection. There were no warning lights illuminated. The vehicle was towed to the local dealer, where it was diagnosed and determined that the fuel pump had disintegrated and there was metal in the fuel system. The vehicle was not repaired. The manufacturer was contacted, but no additional assistance was provided. The approximate failure mileage was 106,000.

Filed Feb 21, 2025 · Engine, Fuel system · 120,000 miles · IL

The contact owns a 2020 Ford F-350. The contact received notification of the federal safety agency Campaign Number: 24V957000 (Fuel System, Diesel); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that the check engine warning light was illuminated, and the low fuel pressure message was displayed on the instrument panel. The contact stated that while driving at various speeds and attempting to accelerate, there was a lag in motive power. The vehicle was taken to the dealer who diagnosed the vehicle and determined that the fuel filters had failed. The fuel filters were replaced. The manufacturer was not made aware of the issue. The failure mileage was 120,000. VIN tool confirms parts not available.

Filed Jan 14, 2025 · Engine, Fuel system · 192,202 miles · CA

The contact owns a 2020 Ford F-350. The contact stated that while driving 60-63 MPH, the vehicle began to shudder and lost motive power and stopped. The contact stated that several unknown warning lights were illuminated after the failure. The contact had to abandon the vehicle on the highway due to safety concerns. The vehicle was towed to his place of employment. The vehicle was then towed to the local dealer, where it was diagnosed and determined that the fuel pump had exploded through the fuel system line. The fuel line and engine were contaminated. The vehicle was not repaired. The manufacturer was not contacted. Additionally, after the failure, the contact received notification of the federal safety agency Campaign Number: 24V957000 (Fuel System, Diesel); however, the part to do the recall repair was not yet available. The local dealer was not contacted. 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 failure mileage was approximately 192,202. VIN tool confirms parts not available.

Filed Feb 13, 2024 · Engine, Fuel system · CO

Emissions control system has "failed" 5 times. Check engine light illuminated. Each time: P0420 DTC code: "Catalyst System Efficiency Below Threshold (Bank 1). Manufacturer is unable to fix. Vehicle will go into "Limp Mode" stranding owners/passengers.

Filed Oct 2, 2023 · Engine · WA

The engine failed on our 2020 F350 at 75,989 miles of normal usage. We only purchased this vehicle used May 2, 2023 from a Ford dealership in Michigan and drove it 5K miles when the check engine light came on. It is currently AT the Ford dealership in Olympia Washington getting a new engine at a cost of $13K. Per the Ford service representative in text, the issue was "There is internal damage in the motor and metal in the oil from the camshaft being damaged." We were told that an engine valve failed, the initial error code was P03035. We are understandably very frustrated that such a young truck/engine failed.