My truck started going into neutral while going in reverse, would rev up going forward and go into neutral or limp mode.
2015 Ford F-150 transmission complaints
Page 8 of 16: complaints 191 to 220 of 441, newest first, as owners wrote them.
I left work was driving down a highway in Wichita going 75 felt like I got rear ended and all of the sudden was going 50 no one was around nothing happened scared me very much, I work for Christian brothers automotive my Forman reset shift adaptives the next day haven’t had anything like that happen again but in the last two years I’ve owned the truck second gear has been getting worse and worse it shifts very hard no matter what after it reaches operating temps also kinda shutters going around corners transmission has been serviced twice in the past two years with BG quick clean and conditioner not sure if it has any codes but with second gear getting worse and hearing everything about the vehicles flipping and with my experience that time I thought i should reach out
The contact owns a 2015 Ford F-150. The contact stated that while driving 70 MPH on the highway, the gear transmission independently shifted from sixth gear to seventh gear. The vehicle was turned off and restarted, and the vehicle operated as intended. Neither an independent mechanic nor a dealer was contacted. The vehicle was not taken to be diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 211,256.
Transmission unexpectedly downshifts to first gear then goes to neutral automatically. Requires driver to pull over and shut engine off for 5 minutes then restart and continue normal operation. In addition to this issue the 3-4 shift lags then slams into gear
The transmission will sporadically shift hard and make a squeal noise on acceleration and deceleration between 20 and 50 MPH. Yes it's available for inspection. It has never stopped completely so the risk factor is unknown. Not reported to dealer or independent mechanic at this time nor has it been inspected by the manufacturer or government agency. There are no warning lights dash messages ever displayed.
I own a 2015 Ford F-150 with approximately 175,000 miles. I have experienced intermittent hard shifting at low speeds for many years. During normal driving, the transmission occasionally shifts very harshly, producing a loud knocking noise and causing the truck to jerk unexpectedly. I do not recall the exact first occurrence, but the hard shifting has been happening since I have owned the truck. I never thought much of it until recently reading about a transmission investigation for similar F-150 models. In December 2025, I experienced a particularly severe hard shift. During this incident, the truck jerked extremely hard and the powertrain warning light momentarily illuminated. This felt unsafe and unexpected. I had the vehicle inspected by an independent mechanic, but no diagnostic trouble codes were found at the time of inspection. Despite this, the hard shifting continues to occur intermittently. This issue is a safety concern due to the sudden and harsh movement of the vehicle without warning.
Uncommanded downshift at highway speed causing sudden deceleration / loss of vehicle stability. Has happened twice, once in 2020 and again in 2025. Typically in slower than highway speeds when traffic is moderate to high and traffic starts to clear. Accelerator is pressed to return to highway speeds and the vehicle downshifts suddenly. Nearly caused collision from the rear vehicles both times.
First time my transmission downshifted to 1st gear coming to a stop at approximately 35mph while gently braking. The leadframe turned out to be defective. Approximately 60k miles later the same symptom and same failure. The leadframe was replaced and that solved the problem.
Was driving my truck to work and all of a sudden it down shifted from gear 6 to gear 4. Then through up the wrench icon on dash. Would not come out of 4th gear. Code was p0720. Output shaft speed sensor. Once code was cleared, it was ok again for about 20 miles then did it again.
I was driving down the road at 45mph and the vehicle suddenly shifted into 1st gear and rapidly slowed down. A malfunction indicator came on, I shut the vehicle off thinking it was a glitch, then the vehicle wouldn't restart. This occured in midday traffic, which could've caused a crash. Never had any previous issues with the vehicle. It cost me $1854 to have this repaired at the Ford dealer, they stated the lead frame connector had failed.
Truck is shifting into low gear while at highway speed cause load thump or bang
My truck abruptly downshifts to a lower gear, first or second, without any warning on the freeway. Seems like wheels lock up momentarily. There is nothing that notifies me before this happens. Very random occurrence but also very dangerous.
The contact owns a 2015 Ford F-150. The contact stated that while driving approximately 40 MPH or less while in 5th or 6th gear, the transmission unexpectedly downshifted to 1st gear. The “WRENCH” warning light was illuminated. The contact restarted the vehicle to turn off the warning light. The contact called a certified Ford mechanic and was informed that the lead frame and valve body had failed. The mechanic stated that the valve body, lead frame, and sensor needed to be replaced. The mechanic also informed the contact that it was a common issue with the vehicle. The vehicle was not repaired. The contact was made aware that the failure was related to the federal safety agency Open Investigation Number: EA26001 (Power Train). The manufacturer was informed of the failure and confirmed that the VIN was not under recall. The failure mileage was approximately 69,000.
Rough shift in 4th gear .. transmission bangs going in and out of 4 th gear ..There's been news reports your investigating this issue and that it could possibly cause the transmission to lock up at highway speeds
When accelerating and decelerating the vehicle jerks and responds erratically. We had just had it at the dealership for its 80k mile maintenance. They did a transmission flush. We thought it was related but when we brought it back in, we were told that the mold leadframe would require replacing.
While driving at normal speeds, the transmission hesitates and pops when shifting into 4th gear. The vehicle slows down unexpectedly before shifting and will suddenly downshift without warning. This causes abrupt deceleration and creates a safety concern, especially at highway speeds. The issue occurs intermittently and without driver input. Even when I’m in normal gears it will downshift and cause me to slow and lose control even when I am not breaking. It occurs at just 35 mph- highway speeds.
On [XXX], I was driving the vehicle and accelerating onto the [XXX] freeway from an on-ramp in northern Phoenix, Arizona. During acceleration, the truck suddenly and violently downshifted, producing an abrupt jerking motion that forcibly displaced the vehicle out of the accelerating gear and into a lower gear without warning or driver input. The incident required us to exit the freeway and pull over. The event caused a momentary but pronounced loss of smooth propulsion at a critical merge point on to the freeway, creating an obvious risk of loss of control and collision with other motorists. The sudden lock-up and downshift, spike in RPMs, and deceleration were entirely inconsistent with normal operation and were objectively dangerous under highway-speed conditions. My passenger and I were jerked forward into our seatbelts. After this incident, I had the vehicle's transmission checked at a small shop, which stated they did not find any codes or issues, but recommended a full transmission rebuild at a cost of several thousand dollars. Finding no diagnostic codes or issues, I continued using my truck until it unexpectedly failed the following month on a freeway. In December 2025, while I was exiting a freeway in Mesa, Arizona, the F-150’s 6R80 transmission downshifted again without being prompted, causing similar critical safety concerns. But this time the transmission was stuck in gear and was unsafe to operate on the highway or city streets. It had to be towed. A repair shop determined that the output speed sensor was found faulty at all times with diagnostic trouble codes of P720, P0722, and P2535, requiring complete replacement of the Leadframe Assembly. To the best of my knowledge and belief, this is consistent with other recalls that Ford has issued related to the failure of its 6R80 transmissions in F-150s and similar vehicles for years 2011-2014, which are known to Ford to have a risk of crashing due to the sudden downshifting concerns. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA)
While in 6th gear driving on the highway at 70 mph the truck downshifted to 3rd and drastically decelerated. When this happened the instrument display went from having all 6 gear numbers viable to only 1 - 3. It had to be put into Manual Mode and shifted into 6th manually. This happens twice in the same trip.
The contact owns a 2015 Ford F-150. The contact stated that upon shifting to reverse and depressing the accelerator pedal, the vehicle hesitated to respond and jerked while responding. The contact stated that upon shifting to drive(D), the failure recurred, and the vehicle rolled backwards unintendedly. The contact stated that the vehicle was able to move forward while in drive(D) after several attempts; however, the vehicle jerked while responding. The contact stated that the transmission gauge needle moved to HOT. The message "See Owner’s Manual" was displayed. The contact stated that the failure had progressively worsened, and the vehicle had failed to shift into gear and had become undrivable. The vehicle was towed to the dealer, but was not diagnosed because the dealer was booked. The vehicle was towed back to the residence. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 120,000.
After a Ford recall on software update for Transmission, the transmission is now starting to fail and downshift for no apparent reason, causing the rears wheels to lock up.
Sudden limp mode — stuck in 1st/3rd/5th gear at highway speed. Dealer confirmed codes: P0720, P0722 Major Safety risk: Loss of power/speed control as vehicle slams out of gear at speed without warning. Known issue with TSB 13-6-8 but issue continues in vehicles like mine post 2013.
The contact owns a 2015 Ford F-150. The contact stated that while driving at an undisclosed speed and attempting to accelerate, the vehicle shifted hard into gear. The contact also stated that the gear shift indicator displayed the incorrect gear. The vehicle returned to normal functionality, but the failure became a regular occurrence. The check engine warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The failure mileage was 180,000. The VIN was not available.
I have had 2 instances of my F150 downshifting at highway speeds to 2nd gear while driving. I was not towing a trailer, just driving normally in both cases on my daily commute to work. The first instance was resolved by coming to a stop, shifting to park, and shifting into drive again. The second instance, I released the accelerator completely, shifted the gear selector to neutral and back to drive while coasting and it seemed to correct. Neither have led to loss of control but it is startling and not a great thing for the longevity and safety of my vehicle. I see how it could become a problem. After instance number 1, I thought perhaps it was a fluke. I now have learned that there have been prior model years of this truck transmission that also have had issues and I am more concerned that this get resolved. I now plan to have vehicle looked at by a dealership in the near future. first incident was early September and second incident was Oct. 20, 2025.
Several times while on the highway my 2015 f150 truck automatically shifts gears down causing the truck to seem if it cant get gas. It goes into the lowest gear. Then all of sudden it will stop and go normal. This is a problem with driving because it is a safety problem. This can cause an accident . Didnt get fixed because dealership red mccombs on I-10 in sa texas stated there was no problem
The contact owns a 2015 Ford F-150. The contact stated that while driving approximately 50 MPH, the transmission unexpectedly downshifted and the vehicle went into LIMP Mode. The vehicle returned to normal operation. The failure had occurred on several occasions. The check engine warning light was illuminated. The vehicle was taken to a certified mechanic, where it was diagnosed that the output shaft sensor needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 200,000.
10-11-25 Transmission changed on its own from 6 gear going 63mph to first or second gear to 13mph (what I seen after realizing what happened) I already had it into Ford for sensor warnings before this and they couldn't find the problem. Now work is done and first gear is rough, and it still acts up towing a trailer. I take it back in on the 20th because I was not offered a rent a car or loaner and they think it's a clutch problem now. Ford will not help with repairs or take blame that this could have been a very bad situation if a semi was behind me. This is a known issue for 2015-2017 models.
I was driving my 2015 Ford F150 and just pulled into the parking lot. The lights on the dash started going off (airbags, parking detectors, big wrench, etc), however the vehicle driving wasn't affected at that time. I immediately stopped and parked, When I returned to my vehicle it had full power, but wouldn't even attempt to start. I had no choice but to tow it to a nearby Ford dealership in Grapevine, TX. It was ultimately diagnosed with a bad "Transmission Lead Harness." The dealership told me that this was a recall item on many F150s, but for some reason, not on mine. I researched this specific issue and found that 2011-2016 models of F150 were affected. It shows an investigation was opened for 2015 models as well. My question is why my specific vehicle is not under a recall. This could be a potentially dangerous issue, i'd think. So, right now I'm looking at a nearly $2000 bill to repair my vehicle when they get the parts in on Friday, 10/10/2025. I believe that if this is a recall on other with the same transmission lead harness, why is mine separated from that. I was given no warning other than the lights going off just before shutting of my truck, then it wouldn't start again. Thankfully I was in a populated area and not in the middle of nowhere. Please advise on any possible what I can get reimbursed for this issue.
The contact owns a 2015 Ford F-150. The contact stated that while driving at an undisclosed speed and accelerating, the transmission was shifting hard shift, causing the vehicle to jump before accelerating. The failure also occurred while reversing. The vehicle failed to immediately start, and several attempts were needed to start the vehicle. The contact occasionally cleared DTC: P1702 (Transmission Range Sensor Fault). During the failure, the vehicle went into LIMP Mode. The failure was intermittent. The “WRENCH” warning light was intermittently illuminated. The failure became more persistent over time. The vehicle was taken to the dealer, but was not diagnosed because there were no codes displayed. The manufacturer was not made aware of the failure. The failure mileage was approximately 110,000.
Transmission on my F150 suddenly dropped to a lower gear as I was pulling out on a highway which significantly lowered my acceleration. Luckily the oncoming traffic slowed until I could safely get across to my lane. Eventually it jumped back into the proper gear. From what I have found on the internet this seems to be a common defect. Only a matter of time before someone is seriously injured or killed. This is not the first time the transmission has done this. I took my F150 to the dealership to be checked and they didn’t find anything wrong. P0706 and P0707 codes.
warning light wrench came on truck suddenly downshifted into low gear
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