In recent weeks, DEF sensor failures have left thousands of trucks parked, with a scarcity of replacement sensors leaving carriers scrambling for solutions.

GM has issued a service bulletin for a DEF sensor problem fix for the 2020 to 2024 GMC Sierra 1500, GMC Sierra HD, and GMC Yukon involving module recalibration.

The DEF level sensor of the affected Chevy Silverado, Tahoe and Suburban vehicles with Duramax engines may read incorrectly, function erratically, or become stuck.

The Environmental Protection Agency (EPA) announced a revision to diesel exhaust fluid (DEF) guidelines to prevent diesel on-road trucks and off-road equipment from severe power loss after running out ...

SSI Technologies, a designer and manufacturer of ultrasonic level, pressure and magnetic sensors and monitoring systems, announced an SCR System DEF combination sensor to monitor urea level ...

EPA rolled out requirements for DEF in the mid 2000s and early 2010s, ensuring that on-road diesel trucks and off-road equipment, like tractors or bulldozers, were equipped with systems that would ...

U.S. Environmental Protection Agency Administrator Lee Zeldin announced guidance Tuesday for engine and equipment manufacturers to prevent sudden shutdowns and power losses that occur in diesel ...