Table 1 shows one common other fuel system related problems of the 2020 Ford F-350.
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems |
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.
A component has not yet failed but an existing recall (Ford recall 24s78 / NHTSA id 24v957) describes the potential for loss of motive power increasing the risk of a crash. This recall was issued in December of 2024. I received a notice in January of 2026 that the repair was available, went to my local dealer and was told the recall had been paused on 02/03/2026 - no actual repair is currently available. I live full-time in my 2021, 20,000 lb. , 5th-wheel RV and frequently tow it with no other option than my 2020 f350 with the open recall. To quote the recall document, "Ford has not issued instructions to stop driving your vehicle under this safety recall" but a loss of motive power is exponentially worse when towing a large load which is what this vehicle was purpose-built to do.
When exiting the interstate and coming to a complete stop at the bottom of the exit ramp we went to make a right turn onto a two lane mountain road when we felt a hesitation and within seconds the engine began to sputter, we lost power and the check engine light came on. This was a two lane 55mph road with no shoulder pull off. Thankfully there was no oncoming traffic in the other lane and there was also an abandoned fruit stand parking lot which were were able to drift across the road and stop in. We experienced a complete loss of power. Had there been oncoming traffic or no open parking lot just across the road we might have experiened a crash. It is important to note that we were on a vacation in the mountains and thankfully our RV was parked at the campground we were not towing it at this time. We had to find a tow service to have the vehicle towed to the nearest Ford dealership in the area. The dealership notified us that there were metal shavings/flakes in the lower fuel filter housing. They told us that this was a complete fuel system failure and that we would need a complete fuel system replacement of all parts. We had been notified of the recall (safety recall notice 24s78/NHTSA recall 24v957) in January 2025 and we had taken it to the local Ford dealership who advised there was no fix for the problem at this time. The dealership that our truck was towed to after this incident advised us that we would have to pay for all the repair costs (excess of $10,000) as this was still an open recall. We feel that this is a major safety issue - we were due to leave for home the following morning where we would have been towing a 7500lbs travel trailer on the interstate roads. Had we experienced this failure then it could have been truley tragic for not only us but other motorists. After this incident we called Ford motor company and advised them and they told us it was still considered an open recall with no fix available.
I own a 2020 Ford F-350 with the 6. 7l power stroke diesel engine. It uses the bosch cp4 high-pressure fuel pump, which is known to be prone to sudden, catastrophic failure. If the pump fails, it sends metal shavings through the fuel system, which can cause complete engine shutdown without warning — a dangerous situation while driving. Currently, an unresolved safety recall exists that could cause additional potential damage to this high pressure fuel pump, which only increases the odds of the pump itself failing. That said, the present unresolved recall does not solve the problem of a faulty high pressure fuel pump. Ford is aware of the issue and switched to a more reliable pump in later models, but has not issued a recall or offered repairs to affected vehicles. This is a known defect that affects safety and reliability. While mine has not failed yet, many owners have experienced engine failure due to this pump, and I believe it’s only a matter of time. I’m concerned for my safety and the cost of repair if this part fails.
Cp4 catastrophic failure which is a known and common problem it caused my truck to die while on the highway almost causing a crash.
Ford sent me a recall for my 2020 f350 powerstroke saying they are trying to come up with a computer programming to fix faulty fuel pump in my truck which could lead to loss of power and crashing especially while pulling heavy loads. This is a mechanical issue. It has nothing to do with a software update which they claim they do not have but will try to get. There is no fix for this at the time. There actually is a fix. S&s makes a dcr fuel pump specifically to replace these fuel pumps because these fuel pumps can blow up and ruin the entire vehicle as the vehicles with these fuel pumps are extremely expensive. . The maker of this dcr pump for a 2020 f350 6. 7 l powerstroke diesel has found the mechanical problem internal to the existing fuel pumps engineering and has designed a new one. I'm sure Ford can pay for these to be put in their vehicles or design one that is similar but these are already being made, sold and installed. Ford says they do not have a remedy for this at this time but there is one and it is this dcr pump. I saved my entire life and have people working in this truck in my family in this truck since couldn't be a serious safety issue and potentially cause death. I think Ford should be having these aftermarket units put in free of charge as all safety recalls are installed free of charge. Anyways, I wanted to write to see if this would be possible or if Ford can be pushed into doing the right thing and installing these in their vehicle. They are about $2,000 and probably around $1,000 to install, but you're talking about losing a $ $70 to $100,000 vehicle and a life. I think it's worth it.
Ford issued recall 24s78 in December of 2024. This recall addresses a known safety issue with the fuel system. It's nearly six months later, and the solution for the recall is still not available. I'm concerned that my 2020 Ford super duty is unsafe to drive, especially when towing a heavy load. Can you please force them to resolve this important safety recall?.
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.
We were leaving kerrville TX around 12:00pm may 22 2024 on our way to colorado for a fishing trip. We got to colorado city TX 3:45pm to refuel and grab a late lunch, we left at 4:30pm. We went through snyder and post TX and approximately 5:45pm 1. 2 miles southeast of southland TX, I had a warning come up on the dash saying low fuel pressure and reduced engine power and had smoke coming in then I pulled over ASAP and upon opening my door flames hit my leg and even more smoke began to fill the cab rapidly. We were fighting for our life’s. You could see fuel dripping/ flowing driver side under hood, location secondary fuel filter you can even see a trail on the pavement. I knew I had to move quickly and grabbed my 2 fire extinguishers and put to use and after I started throwing all combustibles and as many tools used on the ranch away from the vehicle. 6 great samaritans helped with 7 fire extinguisher as we made time to be able to separate truck and trailer by pulling the trailer from the back. But with 8-9 fire extinguishers did not put it out which is a serious problem, I now unfortunately know the taste of fire extinguishers and vehicle smoke. I got all combustibles and the trailer separated and I knew the truck was gone and I needed to get away, it seemed something was fueling it! it all happened so quickly. 84 north and south was closed. The first firetruck with water showed up at 6:07pm and the cab of the truck had completely melted away. A great samaritan offered to haul the saved trailer to an RV park. I thanked the great samaritans, firefighters and sheriff for the help with the unbelievable shocking event that had just happened. 7:05 we were in route to the RV park as the sheriff cleared me to go. Now I have been dealing with smoke inhalation. I have never seen such an intense fire and it had me fight or flight mode. Truck had been maintained to the up most. This was a very traumatic event and has affected my breathing, sleep, ptsd and my confidence to drive.
1. The fuel system failed. Ford dealership removed and replace all parts. 2. Yes my self end other were at risk of an accident. It happened wild driving to work from riverside to los angeles on the [xxx] just inline with the [xxx] . 3. By Ford dealership. 4. By Ford dealership. 5. No warning it just turn of in the middle of the hwy. I was able to drive it out of the freeway on to [xxx] . Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
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.