One problem related to check engine light on has been reported for the 2012 Ford F-250. The most recently reported issues are listed below.
The contact owns a 2012 Ford F-250. The contact stated that while driving approximately 65 mph, the vehicle independently decelerated to 30 mph with the illumination of the check engine warning light and a warning chime. In addition, a caution message displayed that advised the contact to stop safely. The contact noticed black smoke emitting from the exhaust pipe. The vehicle maneuvered to the side of the road. The engine was restarted and was driven at a low speed cautiously. The vehicle was taken to an authorized dealer where the one of the four engine O2 sensors was replaced. The manufacturer was notified of the vehicle. The approximate failure mileage was 33,285.