2017 Ford F-150 vehicle speed control problems

“On 10/13/2026, driving about 25 mph on a city street, my truck entered failsafe with no prior warning lamps or symptoms. The PCM cut most engine power, leaving no acceleration, and set P1285 (CHT Overtemp Sensed) and P1299 (CHT Overtemp Protection Active). The engine was not overheating; a $40 CHT sensor fixed it. Evidence: I watched live data on an Autel MaxiCheck MX808S-TS while driving during the events. CHT dropped to implausibly low values for brief moments, then immediately returned to normal values matching coolant temp. Coolant temp stayed normal throughout. Failsafe triggered on these momentary dropouts, never on an actual high reading. The PCM logic is unsafe: 1. A low-reading sensor dropout was reported as an overtemp. The PCM set two overtemp codes and no sensor circuit code. 2. It ignored contradicting data. CHT recovered instantly and matched normal coolant temp, yet the PCM acted on one momentary bad reading. 3. The response was disproportionate. A sensor glitch with normal coolant temp should set a check engine light and circuit code, not remove engine power while driving. 4. It creates a crash risk. Losing acceleration in city traffic, amid…”

“My 2017 Ford F150 has been downshifting unexpectedly now for weeks. There have been a few times when I literally lost control of my truck. I am afraid to drive on Highway. I use my truck for work and everything else. The local Ford dealership here Astro Ford in D'Iberville, Ms told me yesterday they will not repair my truck based on guidance from Ford...they recieved just a few days ago....saying the recall repair is inadequate and another remedy is being worked on. I cannot drive my truck to go to work to make money to pay bills. Based on what I have read they will also refuse to give me a car loaner of some kind for the time being. What XXX am I supposed to do now??????”

“It shifts down randomly and throws code P0720.Stays in 6th gear and will not allow normal acceleration could potentially be dangerous. Ford stated this isn't covered under the lead frame replacement recall. The speed sensor is part of that lead frame.”

“My Transmission will townshift suddenly on the Highway. The error code I get is the (P0720) output-speed-sensor. I have noticed it has been recalled before. It is very scary when I am driving, and I know it has to be hurting my engine and transmission. I got a recall notice and thought it was for this, but it was for other error codes similar to this. According to my research they all seem to very closely associated. I took it to the dealership, and they said ford won't cover my issue.”

“I purchased a 2017 Ford F-150 on July 9th. It is covered under Safety Recall 26S28 (NHTSA Campaign 26V23700). On July 25th, the vehicle entered highway limp mode due to an Output Speed Sensor failure (Code P0722). A Ford dealership performed the 26S28 software flash but left the failing physical lead frame hardware in the vehicle. On August 15th, the truck reverted to a dangerous limp mode on the highway due to the same unaddressed P0722 hardware failure. Ford Corporate is refusing to authorize the physical hardware replacement under the safety recall framework, leaving the vehicle fundamentally unsafe to drive.”

“Ford Motor Company put out a recall on the PCM. I had the recall performed and it has caused more damage to my truck. It now has eratic shifting, stuck gears, and going into limpmode. Ford Forums show that this is an ongoing issue after the reset is performed creating an unsafe vehicle to drive. The check engine light is now on and was not prior to this recall reset.”