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On-board diagnostics
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===Emission testing=== In the United States, many states now use OBD-II testing instead of tailpipe testing in OBD-II compliant vehicles (1996 and newer). Since OBD-II stores trouble codes for emissions equipment, the testing computer can query the vehicle's onboard computer and verify there are no emission related trouble codes and that the vehicle is in compliance with emission standards for the model year it was manufactured. In the Netherlands, 2006 and later vehicles get a yearly EOBD emission check.<ref>{{Cite web|title=Periodic motor vehicle test (APK)|url=https://business.gov.nl/regulation/periodic-motor-vehicle-test-apk/|access-date=2021-11-22|website=business.gov.nl|language=en}}</ref>
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