{"abstract":"Today's action revises the federal vehicle inspection and maintenance (I/M) rules relating to the implementation deadline by which states are required to begin On-Board Diagnostic Checks (OBD) as a routine part of basic and enhanced I/M programs. This rule change delays to January 1, 2001, the required implementation date for OBD in basic and enhanced I/M program areas in the Ozone Transport Region (OTR) and in all other areas. During this time extension the Agency will generate, collect and analyze the data necessary to accord OBD checks the appropriate level of emission reduction credits. Additionally, certain clarifying amendments are being made to this rule to allow for updates to the Code of Federal Regulations which are cross-referenced in the OBD rule.","action":"Final rule.","agencies":[{"raw_name":"ENVIRONMENTAL PROTECTION AGENCY","name":"Environmental Protection Agency","id":145,"url":"https://www.federalregister.gov/agencies/environmental-protection-agency","json_url":"https://www.federalregister.gov/api/v1/agencies/145","parent_id":null,"slug":"environmental-protection-agency"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/1998/05/04/98-11751.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"51","title":40},{"chapter":null,"citation_url":null,"part":"85","title":40}],"citation":"63 FR 24429","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This rule change is effective May 4, 1998.","disposition_notes":null,"docket_ids":["AMS-FRL-6007-3"],"dockets":[],"document_number":"98-11751","effective_on":"1998-05-04","end_page":24434,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":null,"html_url":"https://www.federalregister.gov/documents/1998/05/04/98-11751/im-program-requirementon-board-diagnostic-checks-amendment-to-the-final-rule","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/98-11751?publication_date=1998-05-04","mods_url":"https://www.govinfo.gov/metadata/granule/FR-1998-05-04/98-11751/mods.xml","not_received_for_publication":null,"page_length":6,"page_views":{"count":22,"last_updated":"2026-07-26 06:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-1998-05-04/pdf/98-11751.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"1998-05-04","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/1998/05/04/98-11751.txt","regulation_id_number_info":{"2060-AE19":{"issue":"199604","html_url":"https://www.federalregister.gov/regulations/2060-AE19/inspection-maintenance-program-requirements-onboard-diagnostic-checks","title":"Inspection/Maintenance Program Requirements -- Onboard Diagnostic Checks","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=199604&RIN=2060-AE19&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2060-AE19"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"J1979, \"E/E Diagnostic Test Modes,\" Society of Automotive Engineers, Inc. [A-94-21-II-A-9]","document_id":"EPA-HQ-OAR-1994-0103-0023"},{"title":"J2201, \"Universal Interface for OBD II Scan,\" Society of Automotive Engineers, Inc. [A-94-21-II-A-6]","document_id":"EPA-HQ-OAR-1994-0103-0022"},{"title":"J1979, \"E/E Diagnostic Test Modes,\" Society of Automotive Engineers, Inc. [A-94-21-II-A-3]","document_id":"EPA-HQ-OAR-1994-0103-0021"},{"title":"J2205, \"Expanded Diagnostic Protocol for OBD II Scan Tools,\" Society of Automotive Engineers, Inc. [A-94-21-II-A-7]","document_id":"EPA-HQ-OAR-1994-0103-0020"},{"title":"J2012, \"Diagnostic Trouble Code Definitions,\" Society of Automotive Engineers, Inc., draft [A-94-21-II-A-5]","document_id":"EPA-HQ-OAR-1994-0103-0019"},{"title":"J1978, \"OBD II Scan Tool,\" Society of Automotive Engineers, Inc.[A-94-21-II-A-2]","document_id":"EPA-HQ-OAR-1994-0103-0018"},{"title":"J1962, \"Diagnostic Connector,\" Society of Automotive Engineers, Inc. [A-94-21-II-A-8]","document_id":"EPA-HQ-OAR-1994-0103-0017"},{"title":"J2012, \"Diagnostic Trouble Code Definitions,\" Society of Automotive Engineers, Inc. [A-94-21-II-A-4]","document_id":"EPA-HQ-OAR-1994-0103-0016"},{"title":"J1962, \"Diagnostic Connector,\" Society of Automotive Engineers, Inc. [A-94-21-II-A-1]","document_id":"EPA-HQ-OAR-1994-0103-0015"},{"title":"Legacy Index for Docket A-94-21","document_id":"EPA-HQ-OAR-1994-0103-0005"}],"comments_count":0,"agency_id":"EPA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-OAR-1994-0103","supporting_documents_count":10,"docket_id":"EPA-HQ-OAR-1994-0103","document_id":"EPA-HQ-OAR-1994-0103-0004","regulation_id_number":null,"title":"Inspection/Maintenance Program Requirement -- On-Board Diagnostic Checks","checked_regulationsdotgov_at":"2022-06-25T03:30:05Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":24429,"subtype":null,"title":"IM Program RequirementOn-Board Diagnostic Checks; Amendment to the Final Rule","toc_doc":null,"toc_subject":null,"topics":[],"type":"Rule","volume":63}