http://www.nytimes.com/2015/10/09/busin ... .html?_r=0Federal and California regulators have begun an investigation into a second computer program in Volkswagen’s diesel cars that also affects the operation of the cars’ emission controls.
Volkswagen said that it had withdrawn 2016 models of its diesel cars from environmental certification in the United States because the company should have disclosed the software and sought regulators’ approval before installing it, but had not done so.
The disclosure of the software was made in testimony by the head of Volkswagen’s American unit, Michael Horn, before a House Energy and Commerce subcommittee hearing, and later confirmed by the Environmental Protection Agency and the California Air Resources Board.