Cummins Westport Inc. is recalling 25,013 of its natural gas-powered engines as cold weather-generated sensor failures could trigger an exhaust fire.

According to the National Highway Traffic Safety Administration (NHTSA), this recall affects Cummins Westport Model ISL G engines made between Sept. 12, 2007, through Feb. 2, 2014, and Cummins Westport Model ISX12 G engines made from Feb. 19, 2013 through Feb. 2, 2014.

NHTSA added that condensation in the tubes that distribute air coming into the engine may freeze during cold weather, with the resulting ice interfering with air pressure sensor operation – potentially increasing exhaust temperatures or causing flames from the exhaust pipe, which could burn a person or cause a fire.