Exhaust emission standards for road vehicles require on-board diagnostics (OBD) of all comprehensive powertrain components (CCMs) impacting pollutant emissions. The legislation defines the generic ...

The second iteration of on-board diagnostics, OBD II, has been required tech on all new cars sold in the U.S. since 1996. That means that anyone who uses or works on cars less than three decades old ...

Federal prosecutors have quietly stepped back from one of the most aggressive fronts in the fight over automotive emissions, ordering criminal cases tied to on-board diagnostics tampering to be ...