Unfortunately for affected customers, the corrective action has yet to be finalized. Interim recall notifications will be ...

Pratt & Whitney is widening its mandatory inspection program for Geared Turbofan (GTF) engines after finding additional ...

When a semi truck's diesel engine derates, it means that it's limiting power. It mostly triggers from faults with the filters ...

This DEF sensor can shut down diesel engines even due to faulty readings, prompting the EPA to remove it as a requirement. EPA removes DEF sensor requirement to address costly diesel engine issues and ...

Wyoming's most famous diesel mechanic, his techy son, and a third well-known mechanic who suffered federal prosecution all worry the EPA's new rule against "DEF" sensors could hurt engines overall.

Evan Williams is an automotive journalist and mechanical engineering technologist with more than a decade of experience in the industry. He has written for the Toronto Star and AutoTrader Canada and ...

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 ...

President Donald Trump and the U.S. Environmental Protection Agency announced guidance allowing the removal of the DEF sensor requirement for all diesel equipment. EPA said sudden speed losses caused ...

March 28, 2026 - WASHINGTON – On Friday, the U.S. Environmental Protection Agency released the following: Today, at the White House Great American Agriculture Celebration, President Trump announced ...

EPA has rescinded rules requiring Diesel Exhaust Fluid Urea Quality Sensors on diesel-powered vehicles and nonroad equipment.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 ...