general problems of the 2015 Ford F-150 - part 1

Vehicle unexpectedly down shifting while driving causing vechile to jerk. After parking truck, truck presents a no start condition and unlit gear selector lights. While driving truck will go in and out of limp mode. I have scheduled a appointment to bring the truck in for a diagnostic test 03/31/2026.

Transmission downshifting at highway speed, started to stall, went to limp mode had to manual shift to get to exit.

Truck began reviving at high idle after throwing a check engine light, then wrench light as I was driving. I was able to safely get off the road. Shut it down wouldn't restart. I let it sit for 4 hrs, it started then I began driving again as there was no indication of an issue before. At 50mph it happened again. Truck began reviving at recline, check engine and wrench light. Shut it down again, and this process of restarting again hours later as nothing was wrong is still going on, 3 yrs of it. Check engine codes that do come up when it begins again all point to speed sensor and leadframe. Someone said check cam sensors but have no check engine on them at all, only leadframe issues that abruptly occur out the blue. When it happens I can driving at any speed and first thing that happens is the throttle revs to redline and truck begins shifting abnormal, check engine, wrench, shutdown(thankfully), then hours again now indication of an issue! when I get the truck shut off and off the road, which I had it towed 7 times, show p705,706,707 codes all pertaining to leadframe. Please for the sake NY family and many others recall the 2015-2017 f150s for this $2000 electrical sensor replacement that is putting lives in jeopardy.

1. System failed: power train (transmission). Component failed: the 6r80 6-speed automatic transmission, specifically the internal lead frame and the direct drum. Inspection: no, the failed unit was replaced on December 19, 2025, but itemized diagnostic reports and repair invoices from both a Ford dealer and an independent shop are available for inspection. 2. The vehicle experienced sudden, unexpected downshifting and a temporary loss of power while in motion. These incidents occurred frequently and randomly, particularly while accelerating or traversing inclines, creating "unsafe driving scenarios" where the vehicle could have been rear-ended or lost traction due to abrupt gear changes. Furthermore, the vehicle eventually entered "limp mode," where it would "buck" during shifts and fail to accelerate under load, leaving the driver vulnerable in traffic. 3. Yes, by both. Independent center: super tech automotive confirmed on December 11, 2025, that the transmission line pressure dropped from 158 psi to 20 psi under load, causing the vehicle to go into "limp mode". Dealer: south west Ford service department verified the concerns on December 16, 2025, documenting a "torque converter shudder" and "direct drum failure" with "excessive metal debris in fluid". 4. Yes. The vehicle was inspected by a manufacturer-authorized dealer, south west Ford service department, on December 16, 2025 (service advisor ryan forbis; transmission specialist 'dietrich'). 5. Yes. Symptoms: the symptoms first appeared in August 2025 as a "sudden, temporary loss of power or unexpected down-shifting". Warning lamps: initially, no warning lights or error codes were produced, which prevented early detection during multiple diagnostic attempts. Later symptoms: on December 11, 2025, the ses (service engine soon) light finally appeared when the truck entered "limp mode". Prior to the total failure, the transmission also exhibited "harsh/jerky downshifts" and would "hang up in gear".

Experiencing sudden hard shifting with the 6r80 transmission. Have had wheels lock up once. Issues with the lead frame as well.

Back up camera has stopped working - it does work very rarely. I contacted the dealer but my 2015 is not included in any recalls even though Ford has a 15-year warranty on some cameras.

Started driving, about 2 minutes in, I noticed an electrical burn smell, and turned to look in the backseat, and it was filling with smoke, and my two young kids started coughing. I rolled all windows down and pulled over as quick as possible, unloaded both kids from rear driver side door. Saw smoke billowing out from behind the car seat on the passenger rear side, so I circled around to that door and went to inspect, right before removing the car seat I heard a loud pop and took off running just to be safe. After about 5 minutes I returned to the truck to notice the entire back windshield was shattered, chunks of glass inside and outside of the truck.

I turned on the rear defroster to my truck. It was by mistake as I ment to push the max ac button. I didn't immediately turn it off. Instantly after turning it on I smelt a strong electrical/burnt small. About 30 seconds later we heard a loud pop. When I looked in the rear view mirror, I saw the back window had shattered. It was very hot to the touch.

Ford f150 1ftew1cpxffc58647, caught fire while parked and unoccupied. Princeton, TX fire dept was not able to identify cause and origin of ignition / fire. Vehicle is available for inspection. Vehicle caught firer while we where asleep. Vehicle was looked at by fire dept and origin of fire was undetermined.

This is the 2nd time this has happened in 2 years. I have my truck turned off completely and locked and go to get back in it a few hours later and I open my door and the gas from the airbag has completely filled up the cab of my 2015 f150. I turn the truck on and it’s like it’s been in a wreck, all the lights on the dash are on, and it’s saying my airbags are deployed which the gas that fills the airbag did deploy, and it keeps telling me to contact 911. How does this keep happening without Ford making a recall or not taking responsibility. It could seriously hurt or I hurt me or my family.

While driving at 60 mph my vehicle went from the 6th gear down to 1st gear on its own bringing the truck speed down very quickly the vehicle behind me almost hit me in the rear I pulled over speedometer stopped working and a imagine of a wrench was on the dashboard I cleared the wrench ?? image on the dashboard and tried to restart the truck turned the key and nothing happened tried again and truck started pulled out and started driving home 4 miles away and it happened again when I got home I googled it and found it is a known problem with the transmission in the 2015 Ford f150 where the sensors in the transmission fail to read your speed and then reacts as if the vehicle is stopped so it then puts the transmission into 1st gear where it would be when you are stopped which creates a very dangerous situation especially if you are on a crowded road at higher speeds.

The contact owns a 2015 Ford F-150. The contact stated that the front passenger's side and seat heater and cooler were inoperable. The contact stated that upon inspecting underneath the passenger's side seat, the contact noticed that the module wiring was burned and melted. The vehicle was taken to the dealer, where it was determined that the wiring and a connector underneath the front passenger's side seat had melted. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 120,000.

While parked and shut off at a gas station in lakeside, CA, my 2015 Ford f?150 XLT spontaneously caught fire under the hood. The fire appeared to originate in the fuse box area, specifically where the fuel pump relay is integrated. The incident posed significant risk, occurring near a fuel pump while my child was in the vehicle. A gas station employee assisted with extinguishing the fire. The cause is believed to be an electrical short. There were no modifications or recent repairs.

Electronic throttle body has failed and been replaced 2 times in 51756 miles. When failure occurs while in traffic truck engine loses power leaves me in dangerous situation. The latest time was [xxx] at 51756 miles in the mountains of colorado. Repair done at mike maroone Ford of longmont, colorado. Feel this should be a recalled part. No prior warning before failure occured00 information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

This vehicle was purchased by a friend with the factory tow package. No modifications were made before my purchase three years ago. I installed a factory brake controller for a travel trailer I purchased. The software was enabled with forscan, and the dealer updated the software to the latest available. Even with a new seven way plug, the truck displays "trailer disconnected" when using the slide brake and also never shows any output when braking. The brakes do engage but very mildly. The travel trailer brakes normally on my other vehicle. There are no fault codes and no obvious connection issues. The dealership today said they do no know the cause and would likely be unable to resolve it.

Truck down shifts hard while driving. Hill assist warning light comes on and truck goes into limp mode and looses power going 60 mph. Pull over truck runs very rough. Turn truck off and back on screen says hill assist not available. Press ok and truck runs normal again. Happens every few days. Definitely could be dangerous if it happens on a bigger highway. Has happened 5 times over last few weeks at different speeds.

Lead body failure. Causing it to downshift suddenly when driving, higher rpm, and non-start condition.

A few years back, I was having an issue with my truck shifting hard. I actually took it to a friend's shop and he repaired it, for about $1600. They changed a "chip" in it. The vehicle was never inspected by Ford, or the police, or my insurance company. The problem was identified by the repair shop and taken care of, or so I thought. The issue seemed fixed for a while but within the last year the issue has begun again. The transmission will not shift at times. It seems stuck, which causes the engine to rev very high. I worry about causing lasting damage to the engine as a result of the transmission sticking.

The engine while operating at normal speed loses power to a rough idle and is remedied by putting the vehicle in park and restarting the engine. The engine never fails to start after restarting, but could fail at any moment, short or long term.

I cold started the engine from inside the house and when I opened the back passenger door there was smoke coming from behind the rear seat in the back area. I couldn’t get to where the smoke was coming from but from the smell it was wire related. I quickly went around to the driver side and turned on the truck and quickly turned it off. About 10-30 minutes later the ring camera showed the rear window of my truck shatter due to this incident in which I was informed that the rear auto defrost turns on due to a malfunction. I put a claim through my insurance and got the window fixed but I am still worried that this issue may happen again. I hope that by informing you of this situation going forward you can help others including myself be aware of this problem and how we can fix it. Thank you for your time and I like to say I love Ford trucks and plan on staying a loyal customer.

Was traveling 75 mph while towing a trailer. Truck was in 6th gear cruising. No fault codes whatsoever, no warning lamps etc. Suddenly the truck briefly downshifted into 1st gear, then upshifted back to 6th gear again. Issue occurred during heavy rain. I cleaned the bulkhead connector on the transmission afterwards and put dielectric grease on the connector o-ring. Connector did not appear dirty or corroded. Issue had not occurred again for 8,000 miles.

The lead frame on the 6r80 transmission is faulty causing a sudden stop in operation while the vehicle is moving.

During the course of driving on the interstate at 70mph the vehicle decelerated and went to a lower gear. The dash panel of the truck did not show all of the gears available. An emergency stop on the side of the road and turning the vehicle off and back on temporarily resolved the issue. It occurred intermittently and without warning. The truck continued to show problems and was taken to a transmissions shop which checked the transmission, replaced a line for a small leak and said everything seemed to be in order. The cause was not found to be a lack of transmission fluid as the levels were normal. The truck continued to intermittently decelerate. The last time that occurred, the back wheels locked up while on the road. The truck is now sitting due to the safety risk it poses and the locked up transmission on the rear end. It is available for inspection upon request. My safety and that of others was at risk. The problem was not replicated in a service center. The vehicle was inspected beforehand but not after the last issue, (it needs a tow as the back wheels are frozen). There was a warning light for the engine camshaft that came on and the problem was diagnosed at Ford as a camshaft issue though they could not understand the deceleration issue. The truck was taken first to Ford then to an independent transmission shop. Due to the issue the truck is not in use.

I was driving at 65 mph when my 2015 f150 shifted into 1st gear. I started skidding sideways and almost flipped but was able to run through the gears quickly and got it into neutral. This has happened a few other times since the initial incident. I constantly receive codes related to lead frame assembly issue: p0720, p0721, p0722, p161b, etc. I am in desperate need of a new lead frame assembly so my vehicle does not crash on the highway. Thanks!.

Twice now in the past 2 weeks I was accelerating from a stop when soon after my truck shifts from 4th to 5th, it’ll slam back down into 2nd gear. Both times my rpms spike, obviously, and my tires briefly screech. Then the truck just shift back up and seems completely normal. There was zero indication of any issues prior to either of these incidents. One of the times, I had my wife and two toddlers in the truck. It was lucky I didn’t lose control either of the times. From the forms that I’ve read, it sounds like I have a faulty transmission range sensor or may need a software update. I have not yet had a dealership officially diagnose my vehicle.

Throttle body failure approx every 45,000 miles. Bought F-150 new, now driven it approx 135,000 miles. Failure occurs when driving a various speeds, incl 75 mph. Engine shuts down, complete loss of power. Dangerous situation; safety at risk! unexpected & random loss of power - w/ passengers aboard - in various traffic situations. After engine shuts down, restarts, then randomly shuts down until a new throttle body is installed. First throttle body failure repaired (=throttle body replaced) @ Ford dealership in price, ut. 2nd failure repaired @ Ford dealership in hamilton, mt. Both covered by extended warranty. 3rd failure repaired 5/21/24 @ hamilton, mt @ $324. 55 personal expense. Check engine light warning occurs.

The truck only goes through 1 through 3 and then when it shifts into 4 it doesn’t go anywhere and it throws a bunch of service codes that just go away when you turn the truck off it has dropped from 6th gear to 3rd and locked the tires up and spun me out almost causing me to wreck the truck.

I connected the 7-pin trailer wire of my 16' tandem axle enclosed trailer with electric brakes to my pickup. I checked the lights on the trailer. All functioned correctly. I got into my pickup to drive. The integrated trailer brake controller was smoking and getting hot. No error messages popped up on the dashboard. I pulled the fuse for the trailer brake module to prevent the integrated trailer brake module from melting or catching fire. Upon searching the internet, this appears to be a problem with my model year (2015 F-150). Ford dealership re-programs the trailer brake module. This needs to be addressed before the brake controller fails and could potentially catch fire. It also could cause an accident, because the electric trailer brakes will lock up or cease to engage.

Al darmarcha mi camioneta no dio marcha creei que la vateria estaba baja pero no dio marcha solo encendieron las luces del tablero brake system y electric park brake no damarcha se bloqueo por completo.

My latest issue is with the 2. 7 ecoboost engine. I had a total failure of this engine last year and am still awaiting a replacement that I am paying for. This is unacceptable as I had this vehicle serviced according to maintenance schedule. I also have had systems report failure such as the hillside assist and the electronic parking brake. Additionally, the automatic transmission has locked up in third gear quite a few times. There are other issues such as a leaky oil pan and such.

The contact owns a 2015 Ford F-150. The contact stated that while driving 60 mph on several occasions with or without the cruise control feature activated, the transmission unexpectedly downshifted to first gear, and the rear wheels locked up. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the transmission circuit board and valve body assembly needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 105,000.

The contact owns a 2015 Ford F-150. The contact stated that another vehicle had backed into the contact's vehicle which cracked the lens cover on the rear cross traffic system. Once the lens cover cracked, moisture began to enter the lens cover which caused both the window defroster and the power windows locks to not operate as needed. The contact stated that several warning messages including the "cross traffic collision", and "tail collision" had appeared on the instrument panel. The contact called several dealers in his area and was informed that the part to repair the vehicle was on back order. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 90,000.

Regarding: 2015 Ford f150 with 20,000 original miles on it. -made 1st report with NHTSA. Gov as well as Ford. Com back in June 2023 about the vehicle throwing codes for anti-lock brake system and communication loss of ecm/pcm. As well as, the system not allowing the brand new battery to ever be fully charged. -upon 1st reporting these issues, the vehicle was placed into the "friendly Ford" service center in crosby, TX to be worked on and issues fixed. $1,376, later, we were contacted by the service center to pick the vehicle up, saying issues were now fixed. (their prognosis: auxillary transmission pump replacement 6/19/2023) after picking vehicle up, all seemed to be running correctly. Until, the vehicle decided to do the exact same thing again. . . No charging the battery, not starting engine, turning itself off, ect. Just got the vehicle out of the same service shop,, this time them claiming that it was now the transmission control module that needed to be replaced. This service trip costed $1490 (july27, 2023). When the service worker went out to bring the truck around for us to leave, he had to attach a battery booster to the battery, just to be able to start the vehicle. . . . Ding< ding< ding!! not fixed. . . . . . Right ?! correct!! it is not!! so, here we are again (07/29/2023) with the code reader at autozone saying "anti-lock brake system/ ecm/pcm (u0151-00 and u0100-00). Battery tested to be in good working order, as well as the entire starting system, itself is in complete working order. And still our problem persists.

The truck shuts off at red lights. This is not the feature for gas saving. The engine completely dies. This is extremely dangerous. You are stuck in running traffic until it starts back up. The Ford dealer said there are no service bulletins and they've never heard of it. But the f150 forum is full of examples, and Ford is not aware or fixing the issue. This happens several times a week.

While driving with my family the truck gave several error messages and a check engine light. I pulled over immediately because the truck lost power and the stability control started shaking violently. I was able to safely maneuver out of traffic, but I cannot imagine what would have happened if I was on a busy highway instead of a small side street. Apparently this is an issue that has been fairly common with Ford from what I have seen online. The vehicle is at the mechanic now for repairs. He has determined that the throttle body needs to be replaced.