2015 Ford F-150 engine problems

“The contact owns a 2015 Ford F-150. The contact stated that while driving 75 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. In addition, the check engine warning light illuminated, and the vehicle stalled. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was made aware of the failure; however, the contact was requested to pay a diagnostic fee. The contact stated that due to the persistent failure, the contact was fearful of driving the vehicle. The contact stated that the failure had occurred four times. The manufacturer was made aware of the failure, and a case was filed. The contact referenced an unknown recall; however, the VIN was not included in the recall. The contact was advised to contact the NNHTSA Hotline to report the failure. The failure mileage was approximately 80,000.”

“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.”

“The contact owns a 2015 Ford F-150. The contact stated that while operating the vehicle, the check engine warning light remained illuminated. The vehicle was taken to an independent mechanic who replaced the catalytic converter and Oxygen sensors. The vehicle was repaired; however, the failure reoccurred. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure and informed the contact that the vehicle was not under an Extended Warranty coverage related to the failure. The failure mileage was 90,000.”

“Problem: Engine unexpectedly goes to idle speed after accelerating up to highway speeds. Cruise control was not engaged at time of failure. This has happened three times, all after a cold start up, and all within 2 miles of home. The most recent occurrence being 6-19-25. At time of failure, multiple warning screens come up on the dash, including "Hill Start Assist Not Available", "Service Advance Trac", "See Manual" (with a picture of a wrench). No check engine light comes on, and no error codes are set. Engine does not respond to accelerator pedal, engine will only idle roughly. When this occurs, the only remedy is to pull over to the side of the road, shut off the engine, then restart the vehicle. Each time this has happened, the engine starts and runs normally with all warning messages cleared from dash. Safety Concern: Unexpected loss of power can increase the likelihood of an accident, especially in heavy traffic. This truck is used frequently for towing, and an unexpected loss of power can create a loss of trailer control. Dealer Contact: Last September when this issue initially cropped up, the truck was taken to our Ford dealer for diagnosis. They kept…”

“Truck is at 135,000 miles and needs its 3rd oil pan due to faulty engineering. Ford is not covering repairs or offering assistance for previously repaired products. I bought truck certified pre-owned with extended warranty. The oil pan was cracked at that time and needed to be replaced at first service. On average oil pans are lasting less then 70,000 miles. How is this allowed to continue to occur.”

“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.”