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Regulations last checked for updates: May 16, 2025
Title 40 - Protection of Environment last revised: Nov 16, 2025
All Titles
Title 40
Chapter I
Part 85
Subpart W - Subpart W—Emission Control System Performance Warranty Tests
§ 85.2201 - Applicability.
§ 85.2207 - Onboard diagnostic test standards.
§ 85.2222 - Onboard diagnostic test procedures.
§ 85.2223 - Onboard diagnostic test report.
§ 85.2231 - Onboard diagnostic test equipment requirements.
authority:
42 U.S.C. 7401-7671q.
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