Saturday, March 28, 2026

The Environmental Protection Agency (EPA) on Friday announced the removal of the diesel exhaust fluid (DEF) SENSOR requirement for all diesel equipment

stating that the sudden speed losses and shutdowns caused by DEF system failures unacceptably compromise safety and productivity 

The new guidance, which removes DEF sensors, is anticipated to save farmers $4.4 billion a year in reairs and lost productivity and provide $13.79 billion a year in savings to Americans, according to the U.S. Small Business Administration.

“Failing DEF systems are not an East Coast or West Coast or Heartland issue; it is a nationwide disaster,” said EPA Administrator Lee Zeldin in a news release. “I have heard from truck drivers, farmers, and many others complaining about DEF and pleading for a fix in all 50 states I visited during my first year as EPA administrator. Americans are justified in being fed up with failing DEF system issues.

“Today, we take another step in furthering our work by removing DEF sensors,” he continued. “Farmers and truckers should not be losing billions of dollars because of repair costs or days lost on the job.”

they just remove the def quality sensor, (that puts your truck in to limp mode if the Def filter is full.) which located in the DEF tank with the level and temperature sensor.

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