https://www.cnet.com/roadshow/news/fiat-chrysler-emissions-recall-epa/

It should be noted that the issue has no direct safety implications to drivers and passengers, and the EPA has not levied any fines as a result of this discovery. A FCA spokesperson, in an email to Roadshow, said it was the result of a routine series of tests performed on in-service vehicles.

The remedy is relatively straightforward. FCA technicians will replace the catalytic converters in all affected vehicles. Because the old converters are still loaded with all manner of precious metals, the automaker will recycle them to recapture as much of that material as possible.