New EPA Guidance on Diesel Exhaust Fluid Systems
The Environmental Protection Agency (EPA) has released updated guidance concerning failures in diesel exhaust fluid (DEF) systems that lead to reductions in speed and power. This initiative is aimed at minimizing productivity losses due to vehicle shutdowns and erroneous alerts in diesel equipment.
Input from Stakeholders
According to EPA Administrator Lee Zeldin, this new strategy is based on feedback from small businesses, farmers, and truckers. The agency is requesting that manufacturers of engines and equipment enhance DEF-related software to offer more repair time before performance issues arise.
Impact on Small Businesses
Zeldin noted, “We’ve heard from small businesses nationwide that the existing DEF system is problematic, leading to failures of diesel equipment when it’s needed most. Today, we are taking action by urging manufacturers to modify their software to prevent unnecessary power reductions and shutdowns.”
Future Regulations for Diesel Trucks
The EPA announced that new diesel trucks, starting with the 2027 model year, must avoid abrupt power loss when DEF is depleted. For existing vehicles, manufacturers are encouraged to roll out software updates consistent with the new guidance.
Financial Benefits for Agriculture
Small Business Administration Administrator Kelly Loeffler stated, “The EPA’s DEF guidance represents a significant victory for small businesses dependent on diesel engines. This change is projected to save family farms around $727 million each year, providing them with financial and operational stability.”
Support from Lawmakers
Secretary of Agriculture Brooke L. Rollins highlighted that “this reform allows agricultural producers to spend more time working in the fields rather than in repair shops, thus supporting biofuels and prioritizing our corn and soybean farmers.” Senator Joni Ernst (R-IA) added, “No farmer should have their tractor stopped due to regulations. These new guidelines will save family-operated farms hundreds of millions each year and are simply a matter of common sense.”
OOIDA Response to New Guidelines
The Owner-Operator Independent Drivers Association (OOIDA), which represents 150,000 small-business truckers, responded positively to the new guidance. OOIDA President Todd Spencer remarked, “The EPA’s guidance offers practical inducement schedules that allow drivers to maintain control of their vehicles while addressing DEF/SCR issues.” He expressed appreciation for Administrator Zeldin’s consideration of the needs of truck drivers and looks forward to continued collaboration for effective emissions solutions.
