Diesel engines across agriculture, trucking and construction have been sidelined by a tiny part that was supposed to keep the ...

EPA changes its diesel exhaust fluid sensor policy. The post DEF sensors no longer required on trucks, other diesel equipment: EPA appeared first on FreightWaves.

The Environmental Protection Agency announced on March 27, 2026, that it is removing the diesel exhaust fluid sensor ...

The EPA is encouraging manufacturers to return to or adopt NOx sensor-based strategies to improve system robustness and reduce failures associated with DEF sensors, but OEMs are largely left to ...

Selective catalyst reduction (SCR) systems were introduced in 2010 in the United States to meet the NOx requirements. With an ...

At the Great American Agriculture Celebration on the White House South Lawn Friday, President Trump announced that the ...

EPA’s latest move on diesel exhaust fluid systems aims to reduce unexpected derates and costly downtime, both persistent ...

New guidance allows engine makers to replace problematic DEF sensors with NOx-based systems, aiming to reduce unnecessary ...

Added information on DEF / DPF system history for on-road and off-road diesel-powered vehicles and equipment. The run of ...

EPA is removing DEF sensor requirements to end costly equipment shutdowns and save farmers an estimated $4.4 billion annually ...

Sick of DEF failures shutting you down? EPA is pushing changes that could reduce disruptions caused by faulty sensors.

The feds aren't scrapping DEF altogether, but this could potentially address a large portion of emissions system failures.