Ford has recalled more than one million trucks from its flagship pick-up range. Some 1,392,935 F-150s are thought to have been affected by a transmission issue that can cause them to leap back down to second gear.

The National Highway Traffic Safety Administration issued a notice Tuesday saying that the “Affected vehicles are equipped with a 6-speed automatic transmission and were built between March 12, 2014, and Aug. 18, 2017.” The NHTSA said the Goliath car manufacturer is aware of two incidents that have led to injury and one accident “potentially related to this concern.”

The agency added in its note that the “signal between the transmission range sensor and the powertrain control module can cause the transmission to unexpectedly downshift into second gear.” It added that “faults can result in a maximum unintended downshift from 6th gear to 2nd gear.” Affected motorists can visit any dealership of the Dearborn, Michigan, manufacturer or Lincoln to have repairs carried out or replacement parts fitted, CBS reports. Read more at National Highway Traffic Safety Administration.