chrysler

The Environmental Protection Agency said Fiat Chrysler violated the Clean Air Act by allegedly installing and failing to disclose software in some 104,000 cars and trucks that alters emissions.

The automaker was required by law to disclose the software to regulators during the certification process but did not do so, the EPA announced Thursday. While the agency is still investigating the nature of these devices, it said the software results in increased emissions of nitrogen oxides.