WASHINGTON – The Environmental Protection Agency’s OBD Policy Workgroup is calling for a change in direction for onboard diagnostics-based emissions-testing programs. The new proposal comes as evidence mounts to indicate OBD systems are underperforming their intended function to only fail vehicles with emissions exceeding 150% of federal test procedure levels. There are two principal aspects to the new position: One of the OBD program goals is to identify components in need ...

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