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Cummins Recalls 500,000 Commercial Diesels for NOx Emissions

Cummins Inc. is launching what regulators describe as the largest U.S. recall ever involving faulty emission controls in diesel-powered commercial trucks.
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Cummins Inc. is launching what regulators describe as the largest U.S. recall ever involving faulty emission controls in diesel-powered commercial trucks.

The engine maker will call back 500,000 medium- and heavy-duty trucks built between 2010 and 2015 to replace catalytic converters that degrade and allow excess emission of nitrogen oxides. The recall extends a previous campaign that targets some 232,000 diesel Ram 2500 and 3500 series pickups with the same issue.

The Environmental Protection Agency notes that regulations dictate a service life of 185,000 miles/10 years for medium-duty trucks and 435,000 miles/10 years for heavy-duty vehicles.

EPA emphasizes that the recall involves faulty hardware and not illegal software created to cheat on emission tests.

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