Diesel engines across agriculture, trucking and construction have been sidelined by a tiny part that was supposed to keep the air cleaner. After years of complaints about failure-prone diesel exhaust ...

Add Yahoo as a preferred source to see more of our stories on Google. Will the ability to stop using DEF sensors impact its consumption level? (Photo: Shutterstock) If a truck driver wants to save a ...

EPA has announced that farm machinery manufacturers will have more flexibility in using different diesel exhaust fluid (DEF) sensors to reduce the risk of equipment shutdowns in the field. Farmers ...

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 ...