2021 Ford F-150: check engine light

Filed Oct 26, 2026 · Transmission · 107,000 miles · TN

The contact owns a 2021 Ford F-150. The contact stated that while driving 15 MPH, the transmission independently shifted into park and the wheels screeched to a stop. The dealer was contacted and made aware of the failure, and the contact was informed that the parts were unavailable to repair the vehicle. The failure became persistent with the check engine warning light illuminated. The contact stated that the vehicle was unsafe to drive. The contact had very important doctor’s appointment scheduled, and the vehicle was the only source of transportation. The contact received notification of the federal safety agency Campaign Number: 26V402000 (Power Train); however, the part to do the recall repair was unavailable. The manufacturer was contacted, and several cases were filed. The failure mileage was approximately 107,000.

Filed Oct 21, 2026 · Fuel system · 135,000 miles · CA

The contact owns a 2021 Ford F-150. The contact received notification of the federal safety agency Campaign Number: 25V455000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. While driving 40 MPH, the vehicle lost automotive power. After restarting the vehicle, the failure persisted. The contact pulled over and had the vehicle towed to the residence and retrieved a diagnostic trouble code for the fuel pump. The check engine warning light illuminated when the vehicle was started. The dealer was made aware of the failure but informed the contact that the fuel pump needed to be replaced. The failure mileage was approximately 135,000.

Filed Oct 13, 2026 · Engine · 64,900 miles · FL

The contact owns a 2021 Ford F-150. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated, and a alert was received through the mobile application. The vehicle was taken to a dealer, where a diagnostic inspection revealed that the knock sensor failed and required replacement. The dealer informed the contact that water intrusion on the intake manifold caused the knock sensor failure. The vehicle was scheduled for repair at the dealer. The contact attributed the failure to the factory omission of the engine cover and the cowl design directly above the engine compartment, which allowed water to collect on the manifold. The manufacturer was notified via telephone, and a case was filed. The failure mileage was approximately 64,900.

Filed Oct 5, 2026 · Fuel system · 60,000 miles · NJ

The contact owns a 2021 Ford F-150. The contact stated that while driving 30 MPH, the vehicle was shaking and the vehicle shut off. The vehicle was restarted. The dealer was contacted and made aware of the failure. The vehicle was taken to the dealer where it was diagnosed with fuel pump failure. The contact was informed that the fuel pump needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The check engine warning light was illuminated. The dealer was made aware of the failure. The contact was informed that the parts were unavailable to repair the vehicle. The contact received notification of the federal safety agency Campaign Number: 25V455000 (Fuel System, Gasoline); however, the part was unavailable for the recall repair. The manufacturer was contacted by phone and made aware of the failure. The failure mileage was approximately 60,000.

Filed Oct 2, 2026 · Fuel system · 51,000 miles · FL

The contact owns a 2021 Ford F-150. The contact stated that while driving 45 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The vehicle was shaking abnormally and the check engine warning light illuminated. The vehicle was driven to the shoulder of the roadway. The contact turned off the vehicle. The vehicle was restarted. The vehicle was driven to the residence. The dealer was contacted by phone and made aware of the failure. The vehicle was taken to the dealer; however, the failure was not duplicated and the failure reoccurred. The vehicle was taken back to the dealer, and the contact was informed that the spark plugs needed to be replaced. The vehicle was repaired. The contact was informed that parts were not yet available for the federal safety agency Campaign Number: 25V455000 (Fuel System, Gasoline). The contact stated that the vehicle was unsafe to drive. The manufacturer was contacted by phone and email and a case was filed. The failure mileage was approximately 51,000.

Filed Sep 29, 2026 · Fuel system · MI

fuel pump has failed, vehicle shut off while driving, ford dealership has confirmed failed fuel pump under the 25s75 recall, check engine light illuminated with fault code P008A (fuel system low pressure) fault code moments prior to vehicle shutting off, vehicle would not restart

Filed Jul 20, 2026 · Transmission · 93,000 miles · NJ

The contact owns a 2021 Ford F-150. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly downshifted from 10th gear to 8th gear and then independently shifted into 9th gear and downshifted to 8th gear before independently shifting back into 10th gear. The contact stated that there was an abnormally loud bang. The power train and check engine warning lights were illuminated. The vehicle was driven to the shoulder of the road and turned off. The contact stated that while attempting to start the vehicle, the vehicle started. The check engine and power train warning lights were off. The vehicle was taken to an independent mechanic where it was diagnosed with transmission failure. The contact was advised to take the vehicle to the dealer. The vehicle was taken to the dealer where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was in the process of being repaired. The contact was informed that the failure was a known failure with the vehicle. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 93,000.

Filed Jun 29, 2026 · Transmission · TX

Component/system affected: Power train / automatic transmission. Description of safety issue: The transmission has recurring harsh and erratic shifting, most noticeable on the first drive of the day. Symptoms include slipping/flaring, delayed or failed upshifts, sudden harsh gear engagement, unexpected large gear changes, loss of power, and occasional operation as if stuck in 4th gear/limp mode. The issue has become severe enough that I have had to manually intervene and pull over. Specific safety incident: On or about June 24th, I was leaving my apartment complex and turning left onto a busy main street. As I approached and entered the turn, the truck was in 1st gear and I was pressing the accelerator, but the transmission appeared to struggle or delay shifting into the next gear. The vehicle did not respond normally, so I continued applying throttle to complete the turn. When the transmission finally shifted, it engaged extremely harshly and caused the truck to lurch forward unexpectedly into the intersection. I had to slam on the brakes to narrowly avoid colliding with another vehicle. This created a serious crash risk because the vehicle first had delayed/lost propulsion and then suddenly surged forward during a left turn across traffic. Safety risk: This defect can cause unexpected loss of motive power, delayed acceleration, harsh engagement, and sudden vehicle lurching while driving. This is especially dangerous when merging, turning across traffic, entering intersections, passing, or driving at highway speed. The problem occurs without a clear warning light or check-engine light, so the driver may not have advance warning before the transmission behaves unpredictably. I am reporting this because the 10R80 transmission behavior caused a near crash due to delayed acceleration followed by sudden harsh engagement/lurching into traffic, and because the failure appears consistent with a known valve body/CDF drum issue affecting Ford 10-speed transmissions.

Filed Jun 25, 2026 · Fuel system · SD

My check engine light has been on for a few months, I called Sioux Falls Ford to ask about it and they told me it's a minimum $200 out of pocket to even look at it. I asked what would happen if the check engine alert had to do with the active recall that is almost a year old that Ford has made no progress to fix, and they said I could file for reimbursement if they deemed the engine warning had to do with the recall. I took my truck to another garage and they found that the check engine light was indeed caused by the fuel pump running at 52psi - the recommended is 51-85psi for my truck. They said the new part would be in the following week to fix it for $1200. When I relayed all of this information to Ford National they told me they weren't able to help me and they were still investigating. They told me that they also weren't responsible for damage to my truck as my powertrain warranty expires next month. They refused to help in any way or offer a timeline of when I could expect a fix. Ford has left me stuck with no options to prevent a potential crash if this faulty piece makes my truck stall on a highway - I can either pay $1200+ for a part from another garage they are legally supposed to fix, or continue to drive a potentially unsafe vehicle based on Ford's negligence. Sioux Falls Ford and Ford National, based on a year timeline with several calls and text chats with both, are refusing to comply with their legal responsibility to remedy this safety recall.

Filed Jun 18, 2026 · IL

Check engine light went on. Knock sensor failure. Vehicle running rough and knocking. On line lots of people complaining. Gentleman in the service department who works for Ford said that he has been getting a lot of knock sensor failures lately.

Filed Apr 13, 2026 · Engine · TX

Check engine light coming on and off with an emissions code, transmission shifting really hard

Filed Mar 23, 2026 · Fuel system · 31,279 miles · MI

The contact owns a 2021 Ford F-150. The contact received notification of the federal safety agency Campaign Number: 25V455000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The local dealer was contacted but the vehicle was not diagnosed or repaired. 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 contact stated that the vehicle stalled while turning on the Interstate, with the check engine warning light illuminated. The vehicle was restarted. The failure mileage was 31,279.