The Justice Department has opened a criminal inquiry into Ford Motor’s emissions-certification process, the latest government investigation involving the auto industry’s compliance with pollution standards.

In a filing with the Securities and Exchange Commission on Friday, Ford said that it had also notified several other state and federal agencies about concerns over its emissions and fuel-efficiency testing, and that it was cooperating with all government inquiries.

The Justice Department investigation, which is focused on “issues relating to road load estimations,” is in its “preliminary stages” but could damage Ford’s financial health, the company said.

Ford said in February that it was investigating employee concerns about the company’s computer-modeling methods and calculations used to measure fuel economy and emissions.