Nebraska AG’s Office issues safety alert for DEF system failures

The Nebraska Attorney General’s Office is issuing an Alert to consumers following reported safety issues with diesel exhaust fluid. Consumers should note that their current DEF equipment may present safety risks, such as sudden speed loss and shutdowns. 

February 4, 2026Updated: February 4, 2026
News Channel NebraskaBy Super Admin

LINCOLN -- The Nebraska Attorney General’s Office is issuing an Alert to consumers following reported safety issues with diesel exhaust fluid (DEF) systems and recent actions by the Environmental Protection Agency (EPA) to address them.

DEF systems are present in diesel engines and equipment often used by farmers, truckers, and motorists. Consumers should note that their current DEF equipment may present safety risks, such as sudden speed loss and shutdowns. 

 In August, the EPA issued guidance urging manufacturers to revise DEF system software in existing vehicles and equipment to address slowdown and shutdown risks. Despite this warning to manufacturers, DEF system failures reportedly remain ongoing and continue to impact consumers. Yesterday, the EPA demanded  information from major diesel engine manufacturers on critical data from DEF system failures to help evaluate the situation and safety risks. 

 The Nebraska Attorney General’s Office supports EPA’s efforts to keep farmers, truckers, and other diesel operators safe. Our office will help ensure these safety risks are addressed by manufacturers. Farmers, truckers, and everyday consumers deserve safe, reliable diesel equipment and vehicles. 

What Can Consumers Do? 

  • Contact your diesel engine or equipment manufacturer to ensure your diesel trucks and equipment meet the new EPA guidelines. Software updates may be necessary to resolve these ongoing safety concerns. 
  • You have the right to repair your equipment to prevent safety issues. The EPA issued guidance on how consumers may self-repair and modify DEF systems to avoid issues. 
  • Ensure your equipment or vehicle DEF is not low or at risk of running low, especially when operating in conditions or distances that would be unsafe if a slowdown or shutdown were to occur. 
  • Our office is dedicated to protecting Nebraska’s consumers from unsafe products. If you are having issues with DEF system failure, please report those issues to ProtectTheGoodLife.Nebraska.gov. 

Regional

Whooping cough, chlamydia and chickenpox: Diseases that increased in the Panhandle in 2025

2 hrs 2 mins ago

Whooping cough, chlamydia and chickenpox: Diseases that increased in the Panhandle in 2025

Valentine Public Library receives multi-million dollar gift

21 hrs 53 mins ago

Valentine Public Library receives multi-million dollar gift

Possible gas leak prompts evacuation at Chadron Motor Company

February 3rd 2026, 5:03 PM UTC

Emergency crews evacuated Chadron Motor Company Tuesday morning after a possible natural gas leak was reported, but Black Hills Energy determined the building was safe and business resumed within about 30 minutes.

Are other area Pizza Huts at risk after Chadron closure?

February 3rd 2026, 4:19 PM UTC

The Pizza Hut restaurant in Chadron has permanently closed, according to Staab Management Company, which operated the location.