There is plenty of misinformation swirling around, so here is what you need to know to sort fact from fiction.

The U.S. Environmental Protection Agency is urging diesel engine makers to replace urea quality sensors, citing high failure rates and costly disruptions. Alternatives such as NOx sensors can be used ...

EPA approved guidance allowing diesel manufacturers to replace urea quality sensors with NOx sensors in DEF systems. The agency said faulty DEF sensors are a significant source of warranty claims and ...

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EPA has rescinded rules requiring Diesel Exhaust Fluid Urea Quality Sensors on diesel-powered vehicles and nonroad equipment. EPA Administrator Lee Zeldin said the change was meant to address ...

The U.S. Environmental Protection Agency on Friday said it is dropping the requirement for diesel exhaust fluid (DEF) sensors as part of a truck's aftertreatment system in favor of monitoring actual ...

At the Great American Agriculture Celebration on the White House South Lawn Friday, President Trump announced that the Environmental Protection Agency (EPA) has officially eliminated the requirement ...