The California Air Resources Board (CARB) has ordered Audi, Porsche and Volkswagen to recall and repair 15,000 vehicles featuring 3.0-liter diesel engines sold in the state since 2009.
According to the watchdog, the vehicles contain an emission cheating software that did not show the correct emission levels when tests were done by the authorities.
Volkswagen has admitted of using the software when the US Environmental Protection Agency issued a notice of violation to the company saying that its four-cylinder Volkswagen and Audi diesel cars exceeded the emission levels but the software helped in circumventing EPA emissions standards.
CARB has given Volkswagen 45 business days to draft and submit its 3.0-liter diesel recall plan.
Porsche in a statement said: "Porsche will continue its efforts to comply fully with all regulatory authorities.
"Porsche awaits detailed information from the engine supplier, Audi AG, as to the specific actions which will be necessary to correct and recertify the 3.0 liter V6 diesel engine."
The emission scandal has taken a toll on Volkswagen which previously said will cut up to €1bn next year to cover the costs of the recalled vehicles.
The company also comes under scrutiny in South Korea where the authorities have ordered Volkswagen to recall 125,522 diesel vehicles after finding that emission test in the vehicles are manipulated.
