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EPA and California ARB charge Volkswagen with using software defeat device to circumvent NOx testing in 4-cylinder 2.0L diesels

Green Car Congress

collectively referred to here as Volkswagen). The alleged violations do not present a safety hazard; the cars remain legal to drive and resell. During EPA emission testing, the vehicles’ ECM ran software which produced compliant emissions results under an ECM calibration that VW referred to as the “dyno calibration”. …

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Volkswagen of America temporarily withdraws application for US certification of MY 2016 vehicles; AECDs

Green Car Congress

The AECD to which Horn refers is distinct from the hidden software “defeat device” in the four-cylinder diesels from model years 2009-2015 that could recognize whether a vehicle was being operated in a test laboratory or on the road. As the EPA has said, these vehicles do not present a safety hazard and remain safe and legal to drive.

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