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2021 Ford F-350 SD: check engine light

12 of the 98 complaints about the 2021 Ford F-350 SD describe check engine light.

owner complaints
12
of this car's complaints
12%
typical mileage
128,000
recalls
0
Is there a fix? 35 service bulletins cover this area of the car. See below

Check engine light by model year

What owners say

Filed Oct 7, 2026 · Engine, Fuel system · MI

Failed Component & Availability for Inspection: The Bosch CP4 high-pressure fuel pump (HPFP) failed internally, shedding metallic debris throughout the entire fuel system. This matches the exact defect in the federal safety agency Recall 24V‑957 and Ford Safety Recalls 24S78 and 26S17. The failing CP4 pump and eight injectors were replaced on 03/14/2026 (Eastpointe Invoice #5997) due to contamination. The truck is located at Bob Maxey Ford in Detroit, MI, and is available for inspection alongside work orders from an authorized Ford dealership and two independent facilities. Safety Risk: The failure caused an abrupt, total loss of motive power on an active highway off-ramp, followed by an immediate no-start stall. Coasting without motive power across traffic lanes created an imminent collision hazard before the truck was towed by Troy’s Towing on 06/05/2026 (Invoice #34647). Problem Confirmation: •03/14/2026: Eastpointe replaced the failed CP4 pump and eight injectors (Inv #5997). •04/07/2026: Bill Brown Ford pulled DTC P228F, found debris on the regulator screen, and advised full fuel system replacement (RO #80302). •04/29/2026: Eastpointe confirmed metal contamination upon teardown (Inv #6342). •05/14/2026: Diesel’s Place found metal shavings on the regulator valve (Inv #2118). •Current: Bob Maxey Ford scanned DTC P0087 but reported no debris, contradicting prior documentation. Inspections: Bill Brown Ford inspected the vehicle on 04/07/2026 and documented debris. Bob Maxey Ford retrieved DTC P0087—a qualifying code for full fuel system replacement under Ford Recall 26S17—yet Ford Corporate denied coverage based on their claim of no metal shavings. Warning Signs & Timeline: In March 2026, the Check Engine Light illuminated with severe engine jerking (pump/injectors replaced 03/14). Bill Brown Ford confirmed DTC P228F and screen debris on 04/07. Metal shavings were reconfirmed on 05/14, leading to a highway stall/no-start on 06/05 and a stored DTC P0087 at Bob Maxey.

Filed Aug 19, 2026 · Fuel system · 30,000 miles · ID

The contact owns a 2021 Ford F-350 SD. The contact received notification of the federal safety agency 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.

Filed Jun 11, 2026 · Fuel system · 195,000 miles · TX

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 the federal safety agency 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.

Filed Apr 8, 2026 · Fuel system · TX

Repair remedy has not been addressed. Leaving the vehicle owners footing the bill when a fuel system problem arises. It's been since 2024 and FMC has not done anything about it. Dec 20,2024 Manufacturer Recall Number24S78 the federal safety agency Recall Number24V957 Recall StatusRecall Incomplete, remedy not yet available Summary YOUR VEHICLES HIGH-PRESSURE FUEL PUMP MAY FAIL, WHICH MAY RESULT IN EXTENDED CRANKING WITHOUT STARTING WHILE THE VEHICLE IS PARKED, ANDOR A LOSS OF MOTIVE POWER WHILE DRIVING. PRIOR TO LOSS OF MOTIVE POWER YOU MAY EXPERIENCE A CHECK ENGINE LIGHT, NOISE, ANDOR REDUCED ENGINE PERFORMANCE. Safety Risk A LOSS OF MOTIVE POWER INCREASES THE RISK OF A CRASH. Remedy PARTS AND SOFTWARE ARE NOT AVAILABLE TO REPAIR YOUR VEHICLE. FORD MOTOR COMPANY HAS AUTHORIZED YOUR DEALER TO UPDATE THE POWERTRAIN CONTROL MODULE PCM AND THE TRANSMISSION CONTROL MODULE TCM SOFTWARE, AND TO CHECK FOR THE PRESENCE OF CERTAIN DIAGNOSTICS TROUBLE CODES DTCS IN THE PCM WHICH COULD LEAD TO ADDITIONAL DIAGNOSTICS, FREE OF CHARGE. Manufacturer's Notes IF YOU HAVE ANY QUESTIONS REGARDING THIS RECALL, OR BELIEVE ANY OF THIS INFORMATION IS INACCURATE, PLEASE CONTACT FORD DIRECTLY AT 800‑392‑3673 OR LINCOLN AT 800‑521‑4140. If the manufacturer has failed or is unable to remedy this safety recall for your vehicle in a timely manner, please contact the federal safety agency Vehicle Safety Hotline at: 1‑888‑327‑4236 or TTY: 1‑888‑275‑9171 or file an online complaint with the federal safety agency.

Filed Feb 20, 2026 · Engine · 92,567 miles · MO

The contact owns a 2021 Ford F-350. The contact stated that while operating the vehicle, the check engine warning light remained illuminated. The vehicle was taken to the local dealer who diagnosed that the DEF Pump, DEF Pump Lines needed, and DEF heater element needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 92,567.

Filed Nov 5, 2025 · Fuel system · 132,900 miles · CA

The contact owns a 2021 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 not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving at an undisclosed speed with the cruise control activated, the contact heard an abnormally loud popping and clicking sound. The check engine warning light was illuminated. The message "Decreased Engine Power" was displayed, and the vehicle experienced a loss of drive power. The contact coasted off the road and came to a complete stop. The message "Shift to Neutral" was displayed. The contact turned off the vehicle and let it cool down for five minutes. The vehicle failed to restart. The vehicle was towed to an independent mechanic, who determined that the high-pressure fuel pump had failed. The dealer was made aware of the failure but confirmed that parts were not yet available. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 132,900.

Filed Mar 14, 2025 · Fuel system · NY

While operating my vehicle on a busy road the power failed and vehicle shut down. Saftey of myself and others were at risk as this occurred while actively driving. Upon restart attempt vehicle failed to start. Vehicle was towed to and inspected by an independent service center. Mechanic advised, based on codes from check engine, the high pressure fuel pump failed and metal shavings were in my fuel system. Mechanic replaced pump, flushed system. Upon return of fixed vehicle power dropped out, check engine light appeard again. Returned to independent service center with codes of metal shavings in fuel sytem again. Pistons replaced, still being worked on for further issues. No prior warnings, check engine lights, recall notices etc. Contacted ford dealership, advised there was no fix and nothing they can do, advised to call corporate. Called corporate who advised I'd be notified via mail when a fix was available and no further help can be given despite the condition of the truck. Truck is unable to be driven due to constant power failures. Advised to tow truck and get a rental, both at my cost, until a fix was discovered which could be upwards of 1 year, keep receipts as I MAY be able to submit for reimbursement but it was too soon to know if those reimbursement services would be covered under a fix for the recall 24S78.

Filed Feb 4, 2025 · Fuel system · 113,000 miles · LA

The contact owns a 2021 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 not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving on the interstate at 75 MPH, the vehicle started to lose motive power. The contact veered to the right to exit the highway while the vehicle was losing power and eventually stopped. The check engine warning light was illuminated. The vehicle was towed to the dealer to be diagnosed. The dealer diagnosed the vehicle with a fuel system shutdown and high-pressure fuel pump failure. The vehicle was not repaired. The manufacturer was made aware of the failure and informed the contact that the vehicle would not be repaired until the second quarter of 2025. The failure mileage was approximately 113,000. VIN tool confirms parts are not available.

Filed Jan 9, 2025 · Fuel system · 128,000 miles · IL

The contact owns a 2021 Ford F-350. The contact received notification of the federal safety agency Campaign Number: 24V957000 (Fuel System, Diesel) however, he had had a failure of the diesel fuel pump prior to receiving the recall letter. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact was observing that the check engine warning was illuminated and that he was having engine misfires. The contact stated that he was also hearing abnormal noises from the engine compart all prior to receiving the recall letter from the manufacturer. The contact stated that the failures were reoccurring until he was no longer able to start the vehicle. The contact had the vehicle towed to a dealer who diagnosed the vehicle and determined that the high-pressure diesel fuel pump had failed. The fuel pump and the fuel system needed to be replaced. The vehicle was repaired. The failure mileage was approximately 128,000. VIN tool confirms parts not available.

Filed Aug 14, 2023 · Electrical · 195,200 miles · MI

The contact owns a 2021 Ford F-350. The contact stated that on several occasions while parked, the vehicle was turned off but remained running. The check engine warning light was illuminated. The vehicle was taken to a dealer where it was diagnosed that there was an electrical short due to condensation going into the fuse box. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 195,200.

Filed Jul 12, 2022 · Electrical, Engine · TX

Check engine light comes on almost everyday. After at least 5 minutes driving, this trucks engine will shut down with out notice. Usually when making a turn or coming to a stop light. When this happens you loose all steering control. You have to shift to neutral and try and restart. This has caused me to almost rearend a highway patrol vehicle. Very dangerous. I have had this vehicle in to the local Ford dealership on numerous occasions; however they will NOT run diagnostics to see what is happening. Have ad independant mechanic and my scan tool run tests and it always shows code P0191 fuel pressure rail faault. Maintenance is always uptodate ad fuel filters changed by dealer every 5,000 miles. Dealer and MF not honoring warrenty.

Filed Nov 17, 2021 · Engine, Fuel system · TX

This truck on a daily basis, shuts down with out warning. Check engine light comes on some time, some times get P0191, P0171 and other codes dealing with fuel rail and pressure. Vehicle had less than 10000 miles when started. Dealer don't know what to do. Shuts off when you are in a turn and leaves you with out steering, and shuts off when coming to a stop sign, or trying to park. Fuel filters have been changed 2 times in 2 months. Truck is not safe to drive because it keeps surging and cutting off. Idle speed varies as much as 250 rpm when sitting still. Now

Questions about the 2021 Ford F-350 SD check engine light

Is check engine light a common problem on the 2021 Ford F-350 SD?

12 of 98 owner complaints about the 2021 Ford F-350 SD (12%) mention check engine light. The model year with the most reports is 2015.

Is there a recall or service bulletin for this on the 2021 Ford F-350 SD?

There are 0 recalls and 35 service bulletins for the same area of the car. Check them below with your VIN.

Other symptoms on the 2021 Ford F-350 SD

Fuel pump 20Loss of power 9Stalling 5

All model years of the Ford F-350 SD

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