2015 Ford F-150: transmission slipping

Filed Aug 4, 2026 · Electrical, Engine · NY

The timing belt/chain is failing on F-150 trucks and multiple people have sent in issues. i think from 2015-2018. It looks like you are already looking at other Fords with same issue. what i was told is that there could be sudden stalling: If the timing is thrown off or the chain snaps, the engine cuts out instantly. Losing power steering and engine power while driving in traffic creates an immediate crash hazard. Severe Misfires and Power Loss: A slipping chain causes rough idling, violent shaking, and an inability to accelerate which happened to the truck. Due to this i had to get mine fixed in June of 2024 i have attached the invoices. I tried to upload invoice but said there was an error

Filed May 8, 2026 · Transmission · OH

In the Fall of 2024 we started having trouble with our F150 Ford Truck's transmission. It would drop gears, even from 6th gear to 1st gear, as the recall has stated, so we took it to someone who specifically deals with transmissions, and he stated that the truck was throwing a code that shows that the transmission shift module or sensor was bad. He told us to check with Ford to see if there were any recalls and Ford told us that there were not. We had the sensor replaced, which cost us over $900, back in December of 2024. Well, the transmission continued to slip from 3rd to 4th gears constantly and would only occasionally drop gears, but is continuing to do so on a regular basis. We took the truck back to the transmission garage and he stated it would cost $5000 to rebuild the transmission. We have tried to call the Ford recall line, but just hangs up after giving us the same information the recall letter told us. So we have no one to report that we are having the issues we are having. So are we to continue to drive a truck that possibly could cause an accident on the highway or is there another solution to this problem other than waiting on Ford to come up with a fix possibly in July? Thank you, [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 16, 2026 · Transmission · CA · crash

GOES INTO LIMP MODE. Transmission shifts hard, slips, locks up. I've been having this issue for 2 years. Transmission seems to shift twice in 3rd and 5th gears, there's a jult then goes to limp mode, no excelleration. After a minute or so, it's stuck in 3rd or 5th gear. Wrench light appears. I have been pulling over, ( when it is safe ) plugging in my scanner, then erasing codes. P0755, P0740, P0741. This has been a temporary fix. I've had the valve body replaced 3 times, with the lead frame. And recalibrate to the ECM. Still having the same issues.

Filed Mar 22, 2026 · Transmission · NY

Transmission slipping and bangs into and out of gears downshifts without doing anything when transmission services there was lots of metal fragments on the magnet2 no change and after having transmission reprogrammed no change

Filed Feb 26, 2026 · Transmission · MA

As I was slowing down the truck started to flash the 123456 indicator for the gear. The truck then slipped out of gear and even though I was in drive the truck wouldn’t move. Like I was in neutral. Then with a big bang it started to move again. I stopped and shut the truck off. Started back up and continued to drive to get home. I stopped for a red light and accelerated away from the light and got stuck in the middle of the intersection. I had to shut the truck off in the middle of a state highway then start it again to be able to drive away. It turned out to be a transmission issue from something called the “ Lead Frame Connector.” The dealer says it happens to all of them. It was very sudden and very dangerous.

Filed Feb 9, 2026 · Transmission · MO

While operating on my daily commute at approximately 40-50 mph, the vehicle suddenly downshifted from 5th gear to 3rd, with no throttle input change. Following a commanded full stop of the vehicle, upon accelerating, the vehicle seemed to be slipping into each gear. A short duration later, the vehicle prompted me with an orange wrench symbol on the instrument panel and the phrase "see manual." The vehicle would then only shift down as low as 3rd gear and appeared to be in a limp mode with no 1st or 2nd gear until shut off and restarted. I then took it to my local Ford dealer and had it diagnosed as a "P0722, pinpoint OSS sensor failure." It was repaired with a new lead frame on December 10th, 2025.

Filed Feb 5, 2026 · Transmission · KY

Very harsh downshifts at random speeds. Transmission slips very hard when cold and overall slips or down/up shifts hard randomly and fairly often

Filed Jul 28, 2025 · Transmission · AZ

Transmission slips into third at high rate of speed exceeding 45 mph. Transmission will stay in third causing slow acceleration on turns.

Filed Jun 16, 2025 · Transmission · 128,350 miles · WV

The contact owns a 2015 Ford F-150. The contact stated that while driving at various speeds, the transmission was slipping while downshifting from 5th to 4th gear while attempting to slow down, causing the rear tires to lock up momentarily. Additionally, the front differential made an abnormal sound. There was no warning light illuminated. The vehicle was taken to a local dealer, where the vehicle was diagnosed, and the contact was advised that the forward clutch and the transmission were faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 128,350.

Filed May 5, 2025 · Acceleration, Transmission · NC

I noticed in the fall of 2024 that my transmission stared shifting hard between 30-40 mph during acceleration. I had the local Ford dealership check out the issue and they stated I needed a new transmission and included an estimate. I decided to seek information from 2 independent transmission shops and they could not confirm that I needed the transmission replaced at that time. The vehicle has been driving fine and I recently started to notice the hard shift again at 30 mph. Every once in a while, when the hard shift occurs, it seems like I lose power to the drive train and my vehicle slows down to about 15 mph and vehicles need to go around me. It only lasts for a few seconds and then the acceleration will continue to drive normal. I do notice an increase in RPM's from time to time as well while shifting around 30 mph but does not feel like it is slipping. Once through this area of shifting, the vehicle operates normally shifting through other gears. There were no warning lights or other symptoms leading to this issue. I did notice that there was an article posted with a possible transmission issue from this year vehicle that is being investigated concerning sudden down shifting while driving. Here is the article [XXX]. I am wondering if this is part of this issue? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 7, 2025 · TX

My truck downshifted into 2nd gear after i was in 6th gear, now my transmission is slipping into 4th gear. But when i press the accelerator a little harder it’ll shift better but it’s not practical in a city