393 of the
5,142 complaints filed about the Ford F-350 SD
are about the fuel system —
8% of everything owners reported.
The worst model year for it is 2020.
VEHICLE EXTENDED CRANKING WITHOUT STARTING WHILE THE VEHICLE IS PARKED, AND ONCE STARTED IT WAS LOSS OF MOTIVE POWER WHILE DRIVING AND ALMOST WAS IN ACCIDENT BECAUSE OF THIS. SHEEHY FORD SEE ITS A RECALL AND SEE ITS EXACTLY WHAT THE RECALL IS STATING BUT REFUSING TO FIX IT AND WANT TO CHARGE ALMOST 10K TO DO SO.
NHTSA complaint #11758218 — an unverified report by a vehicle owner.
The contact owns a 2021 Ford F-350 SD. The contact received notification of NHTSA Campaign Number: 24V957000 (Fuel System, Diesel). The contact stated that while driving 20 MPH, the message "Reduced Power" was displayed, and the check engine warning light was illuminated. The vehicle stalled and failed to restart. The vehicle was towed to a dealer and was diagnosed with failures of the CP4 fuel pump, cycloid filters, and contamination of the entire fuel system. The vehicle was not yet repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 30,000.
NHTSA complaint #11757987 — an unverified report by a vehicle owner.
I find it absolutely absurd that the fuel pump recall is still not resolved! When are you going to hold Ford accountable for this egregious delay? This has been over a year now. Everyday I drive my truck and tow my travel trailer wondering if at anytime it may just die on me on the highway.
NHTSA complaint #11757127 — an unverified report by a vehicle owner.
I have a 2017 ford f350 diesel 6.7 and replaced the low pressure fuel pump in 2022 at about 57000 miles. Then again in July of 2026 the fuel pump has had to be replaced again at 68000 miles. I read that many 2022 ford vehicles were recalled in that year for a bad fuel pump. So I think I might have been given a bad fuel pump from that year 2022 and now its bad again. This is a know problem for fords I dont understand why there is not a recall for these pumps. Ford is been building bad pumps for a long time and are getting away with it, A fuel pump should not have to be replaced after 3 years. The work was all done at the Beach Ford Dealership in myrtle beach sc 29575.
NHTSA complaint #11755600 — an unverified report by a vehicle owner.
Our 2018 Ford F-350 Super Duty diesel with the 6.7L Power Stroke engine has a well-known, massive fuel system concern involving the Bosch CP4 high-pressure fuel pump. This pump failed and it sheds metal shavings throughout the entire fuel system. Repair cost $13k. Per other consumer and google results: The CP4 Fuel Pump Issue. The Defect: The Bosch CP4 pump is designed for European diesel fuel, which has more lubrication than American diesel. When it lacks sufficient lubrication, it can score itself and self-destruct. The Damage: Metal debris floods the fuel rails, lines, and injectors, requiring a complete replacement of the fuel system components.
NHTSA complaint #11755489 — an unverified report by a vehicle owner.
Vehicle went into limp mode and we towed it to the dealership. They ran diagnostics and found that the fuel filter was causing a fault for water in the fuel filter. They replaced the fuel filter and ran diagnostics again and it flagged failure for Low pressure fuel pump. They replaced the low pressure fuel pump and reran diagnostics. When they reran diagnostics it flagged for High pressure fuel pump failure and now they are in the process of tearing it down to the point of failure to find out the cause. My vehicles vin was not included in the original recall and believe that it should have been included.
NHTSA complaint #11755333 — an unverified report by a vehicle owner.
The contact owns a 2020 Ford F-350. The contact stated that while driving 65 MPH and towing a dump trailer, the vehicle entered LIMP Mode. The contact was able to pull over to the side of the road. The vehicle was towed to the contact's storage yard, where an independent diesel mechanic performed a diagnostic scan and retrieved diagnostic trouble codes indicating a fuel system failure. The vehicle was towed to a dealer, where it was disassembled and diagnosed with a CP4 pump failure resulting from a water separator failure. The contact was informed that the CP4 pump replacement was not covered and needed to be replaced at the owner's expense. The manufacturer was notified of the failure and contacted the dealer, but no further assistance or information was available. The vehicle was not repaired. The failure mileage was approximately 180,000.
NHTSA complaint #11753214 — an unverified report by a vehicle owner.
1. High Pressure Fuel Pump 2. All safety is good 3. It has been taken to the dealership and blaming it on the water separator (water/rust in fuel) The codes thrown are towards the High Pressure Fuel Pump 4. No there were no warning lights or messages prior to the failure. 5. Dealership did not provide the inspection report
NHTSA complaint #11753218 — an unverified report by a vehicle owner.
The contact called on behalf of a Federal Agency that owned a 2019 Ford F-350. The contact stated that while driving 55 MPH, the check engine warning light illuminated, and the message "Reduce Power Mode" was displayed. The driver pulled over to the side of the road, and the vehicle shut off. The driver became aware of smoke coming from underneath the hood of the vehicle. The driver opened the hood and became aware that the engine compartment was engulfed in flames. The driver attempted to extinguish the fire with fire extinguishers; however, the fire persisted, and the vehicle was completely burned. The fire was extinguished by the Fire Department. The contact believed that a Fire Department report was filed. A Police report was filed. No injuries were sustained. There was no property damage. The vehicle was towed to a tow yard and was deemed a total loss. The contact related the failure to NHTSA Action Number: PE24014 (Fuel System, Diesel, Fuel System, Other). The manufacturer was notified of the failure. The failure mileage was approximately 120,000.
NHTSA complaint #11752108 — an unverified report by a vehicle owner.
The contact called on behalf of a Federal Agency that owned a 2019 Ford F-350. The contact stated that while driving 55 MPH, the check engine warning light illuminated, and the message "Reduce Power Mode" was displayed. The driver pulled over to the side of the road, and the vehicle shut off. The driver became aware of smoke coming from underneath the hood of the vehicle. The driver opened the hood and became aware that the engine compartment was engulfed in flames. The driver attempted to extinguish the fire with fire extinguishers; however, the fire persisted, and the vehicle was completely burned. The fire was extinguished by the Fire Department. The contact believed that a Fire Department report was filed. A Police report was filed. No injuries were sustained. There was no property damage. The vehicle was towed to a tow yard and was deemed a total loss. The contact related the failure to NHTSA Action Number: PE24014 (Fuel System, Diesel, Fuel System, Other). The manufacturer was notified of the failure. The failure mileage was approximately 120,000.
NHTSA complaint #11752108 — an unverified report by a vehicle owner.
I am filing this complaint regarding my Ford F-350, VIN [XXX], which caught fire on XXX. The truck had approximately 130,000 miles, which I consider low mileage for a properly maintained diesel Ford F-350. These trucks are known for long service life, and many Ford diesel trucks routinely remain in service for 20 years or more and exceed 250,000 miles when properly maintained. For that reason, I did not expect a sudden and catastrophic fire in a truck with only 130,000 miles. While driving, passing motorists alerted us the truck was on fire. The fire appeared to originate in the engine compartment and spread extremely rapidly. Within a very short period, the front of the truck was engulfed in flames and sustained catastrophic damage. Based on the speed and severity of the fire, I am concerned a failure in the engine compartment, fuel system, electrical system, or another vehicle component may have caused or contributed to the fire. This truck has been well maintained, kept clean, and responsibly cared for. I followed the manufacturer’s maintenance guidelines and did not expect a sudden engine-compartment fire. After the fire, I found reports of other F-350 fires and references to fire-related complaints and investigations. This raises serious concerns Ford may have known of a potential fire risk involving these trucks. This incident created major safety hazard not only to the occupants of the truck, but to other motorists and anyone nearby. Had passing drivers not alerted us, the outcome could have been far worse. The severity of the fire required a major emergency response, including multiple fire trucks and police. A vehicle fire of this magnitude presents an obvious risk of serious injury or death. I request NHTSA investigate Ford F-350 and vehicle fire incidents to determine whether a defect involving the fuel system, electrical system, or related parts may cause these trucks to catch fire without warning. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11749325 — an unverified report by a vehicle owner.
I have been waiting over a year for this low pressure fuel pump recall and it has stopped me from driving long distance to visit my daughter where part of the trip is hoursbthrew the Nevada high desert with extreme heat and NO CELL SERVICE. I AM FED UP AND NEED YHISNISDUE REDOVLED NOW OR A NEW DARN TRUCK. PLEASE ADVISE
NHTSA complaint #11749092 — an unverified report by a vehicle owner.
This model has the same Bosh CP4 high pressure fuel pump as the recalled models 2020-2022 and in fact being older the catastrophic failure risk is higher due to additional mileage. If this part fails the engine shuts off with loss of steering and braking even when pulling 15-20K pounds. The safety concern for this year is the same or greater then newer models.
NHTSA complaint #11746669 — an unverified report by a vehicle owner.
The contact owns a 2021 Ford F-350. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed, but the vehicle failed to accelerate as intended. The vehicle was driven to the shoulder of the road, where it lost motive power. The message "Reduced Engine Power" was displayed, and the check engine warning light was illuminated. The contact stated that the failure occurred while a fifth wheel RV was hitched to the vehicle. The vehicle was towed to the dealer, where it was diagnosed that the high-pressure fuel pump had failed and needed to be replaced. The vehicle was not repaired. The contact was informed that the manufacturer denied covering the repair under NHTSA Campaign Number: 24V957000 (Fuel System, Diesel) due to a contaminated fuel system; however, the dealer confirmed that the fuel system was not contaminated. The dealer submitted information to the manufacturer advising that the fuel system was not contaminated. Additionally, a case was filed; however, the contact was denied coverage. The failure mileage was approximately 195,000.
NHTSA complaint #11743498 — an unverified report by a vehicle owner.
The contact owns a 2020 Ford F-350. The contact received a notification of NHTSA Campaign Number: 24V957000 (Fuel System, Diesel); however, the part to do the recall repair was not yet available. The local dealers were contacted; however, the parts were on back order until late September. Another local dealer was contacted (Kendall Ford of Anchorage|1950 Gambell St, Anchorage, AK 99501); however, the distance was far to great in a remote area. 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 contact had not experienced a failure.
NHTSA complaint #11741602 — an unverified report by a vehicle owner.
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 NHTSA 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.
NHTSA complaint #11739265 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11736551 — an unverified report by a vehicle owner.
Vehicle Safety Complaint – 2021 Ford F-350 I am submitting this complaint regarding a safety-related failure involving my 2021 Ford F-350. While driving under normal conditions, the vehicle suddenly entered “limp mode,” resulting in a significant and immediate loss of power. Approximately 20 miles later, the vehicle completely shut down, leaving me stranded and requiring the truck to be towed to Gene Messer Ford for diagnosis and repair. The failure created a potentially dangerous situation, as the loss of power limited my ability to maintain safe speeds and respond to surrounding traffic conditions. After the vehicle was delivered to the dealership, it took approximately one week for inspection and an additional two weeks to complete repairs. During the repair process, I was informed that newly installed components—including the fuel rail and two fuel injectors—were defective and required replacement again. This raises concerns about whether the root cause of the failure was properly identified and whether contamination or systemic failure within the fuel system was present. I am also aware of widely reported issues involving high-pressure fuel pump (HPFP) failures in Ford diesel engines, which can result in catastrophic damage to the entire fuel system, including injectors, fuel rails, and lines. Given the nature of my vehicle’s failure and the components involved, I am concerned that this incident may be related to a broader, known defect. This type of failure—sudden loss of power followed by complete shutdown—poses a serious safety risk, particularly if it occurs at highway speeds or in high-traffic conditions. I am requesting that this complaint be reviewed as part of a broader investigation into potential fuel system defects in Ford diesel trucks. I believe this issue may warrant further scrutiny and possible recall action to prevent similar incidents.
NHTSA complaint #11735094 — an unverified report by a vehicle owner.
The CP4 is failing, this has been a know problem on these F- series trucks for sometime now. This needs to be remedied on these vehicles. This has been known for years.
NHTSA complaint #11730672 — an unverified report by a vehicle owner.
While sitting at a stop sign, the fuel supply line blue off the fuel filter under the hood. Straying diesel fuel all over. The white clip that hold the hose on had crumbled apart, It soaked the engine with fuel and we were lucky it did not start a fire. The fuel line was reattached and it then blew off again. I had to replace the entire fuel line at a cost of around $1000. Prior to the first event the filter had been on the truck and was being serviced every other oil change in line with the manufactured guidelines. When looking on line this is a major problem with the fuel line and under hood filters causing fires. This needs a repair before more people are hurt
NHTSA complaint #11730641 — an unverified report by a vehicle owner.