2014 Ford Mustang: check engine light

Filed Aug 3, 2026 · Transmission · 138,000 miles · AZ

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.

Filed Mar 13, 2025 · Transmission · 172,000 miles · TX

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 federal safety agency Hotline to report the failure. The failure mileage was approximately 172,000.

Filed Sep 6, 2023 · Transmission · CA

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.

Filed Jul 13, 2023 · Engine, Fuel system · 80,000 miles · AL

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.

Filed Feb 14, 2017 · Engine, Fuel system · 10,000 miles · NY

I was going to work around 15:45 when I had to accelarate on a mountain while I was on the fifth gear. I gave enough gaz but the engine did not want to respond. After arriving at the top of the mountain, not being able to accelerate on the 5th gear, I downshifted to the 4th gear. Same result the engine did not respond. The engine then stalled, battery light came up, oil and engine light came up after. The road was turning radically so I told myself I will try to stop after the curve so I wont be dangerous to other cars in the curve. Problem is, steering box failed to fonction and I almost crashed in a light post. Even with my two hands forcing on the steering wheel it was very difficult to turn. I called ford road assistance for a towing. It took around 40 minutes for it to arrive. For a 12th february in qubec, it is long and cold to wait in a car 40 minutes with no heating. Two days later ford called me to tell me oil smelled gaz and sparked plugs were finished, for then telling me the engine is done due to a piston. Because of a modification on the engine (a supercharge) I am aware the warranty will probably not cover the engine, but this seems to not explain why the steering box failed in which I almost did an accident.

Filed Jul 31, 2015 · Acceleration, Fuel system · 36,400 miles · FL

Tl* the contact owns a 2014 ford mustang. When the accelerator pedal was depressed at approximately 80 MPH, a fuel odor emitted from the air vent inside the vehicle. The vehicle was taken to a dealer where a smoke test was performed and the technician stated that the vehicle was operating as designed. In addition, while driving approximately 35 MPH, the vehicle stalled and the check engine warning light illuminated. The vehicle was taken to a dealer where it was diagnosed that the throttle body needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 36,400. The VIN was not available.

Filed Oct 9, 2014 · Acceleration, Brakes · 8,042 miles · FL

2014 ford mustang. Consumer writes in regards to engine problems. *smd the consumer stated she heard a ticking sound, after driving for 15 minutes. The dealer stated the entire long block needed to be replaced. After the long block was replaced, the engine light started flashing, and the engine was revving higher than normal. The vehicle accelerating by itself in gear and there were pressure issues with the brake pedal. The dealer was unable to replicate the consumers concern. The next time the consumer returned to the dealer, the ignition was replaced. The RPM's continued to rev, idle was very rough, even with the AC off. The ticking noise was still present, and the brake pedal was hard to the touch.