Heavy-Duty On-Board Diagnostic System Requirements 2018

This page last reviewed Octubre 11, 2019

Proposed Revisions to On-Board Diagnostic System Requirements, Including the introduction of Real Emissions Assessment Logging (Real), for Heavy Duty Engines, Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles and Engines

Hearing Date(s)
Public Comments Received
Final Approval / OAL Action

OAL approved the rulemaking and filed with Secretary of State on October 3, 2019. The effective date is October 3, 2019.

Adopted Regulations and Materials Submitted to OAL

The final rulemaking package was submitted to OAL on August 21, 2019. OAL has until October 2, 2019, to make a final determination.

Final Regulation Order for HD OBD Regulation § 1971.1  (See Revised Above)
Final Regulation Order for HD OBD Enforcement Regulation § 1971.5  (See Revised Above)
Final Regulation Order for HD OBD II Regulation § 1968.2  (See Revised Above)
Final Statement of Reasons  (See Revised Above)


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