2014 Ford Mustang power train problems

“The contact owns a 2014 Ford Mustang. The contact stated that on several occasions while driving at various speeds, the transmission unexpectedly downshifted to a low gear. The check engine warning light illuminated and remained illuminated after the first failure. The vehicle was pulled over to the side of the road, restarted, and the contact continued driving. The contact stated that during the last failure, while attempting to restart the vehicle, the vehicle failed to restart. The vehicle was towed to the residence, and a hand-held diagnostic machine retrieved DTC: P1500. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 138,000.”

“The contact owns a 2014 Ford Mustang. The contact stated while driving at 65 MPH, the transmission unexpectedly downshifted to first gear. The check engine warning light illuminated, and the instrument cluster was red. The vehicle was taken to an independent mechanic where it was diagnosed with a failed transmission ring sensor. The contact was informed that the transmission ring sensor needed to be replaced. The vehicle was not repaired. In addition, the contact stated that the failure was intermittent, and occasionally the vehicle lost motive power. The manufacturer was made aware of the failure. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 172,000.”

“The contact owns a 2014 Ford Mustang. The contact stated that while driving approximately 80 MPH, the transmission unexpectedly downshifted from fifth gear to first gear, causing the vehicle to abruptly decelerate. After turning off and restarting the vehicle, the vehicle operated but in LIMP Mode. The vehicle was taken to the local service center who diagnosed that the wheel speed sensor and lead frame needed to be replaced. The vehicle was not repaired. The local dealer and manufacturer were notified of the failure, but no assistance was offered. The failure mileage was 140,000.”

“the following problem happened to me a few years ago (twice within a couple of months) and again, 2 days ago. Each time I was standing at a traffic light when all of a sudden it accelerated at full throttle. I practically stood on the brake pedal, but the car was inching forward, as I put the transmission into park. This was not a subtle situation, it was dangerous. The engine went from idle to screaming within 2 seconds. I ruled out the floor mat as it was in the proper position and snapped into the floor. It did not cause any warning lights to come on. in May, I had the oil changed, at which time they suggested that they clean the throttle body, which they did.They never heard of the above problem.”

“Was driving my vehicle on the freeway traveling about 70 miles per hour when the vehicle suddenly shifted into first gear. I was able to maintain control and the vehicle shifted back to sixth gear. Issue occurred again within 5 minutes of the first incident and then the vehicle went into "Limp Mode". I was able to drive the vehicle home under this condition. Vehicle check engine light turned on and the code P0720, which is the Output Speed Sensor Circuit. This is the same issue that occurred on 2011-2013 F-150 and Mustang vehicles that currently have a recall for this (Safety Recall 19S07). The same transmissions (6R80) are used in both vehicles, as well as the Powertrain Control Modules, but my vehicle's VIN did not fall under this recall. This is a very dangerous issue that could lead to a deadly accident.”

“The contact owns a 2014 Ford Mustang. The contact stated that while driving approximately 35-70 MPH, the vehicle inadvertently downshifted to first gear. The contact stated that the rear wheels locked up and the vehicle jolted forward. The air bag, fuel, and check engine warning lights were illuminated. The vehicle was towed to the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was contacted but no assistance was provided. The failure mileage was approximately 80,000.”