Heavy-Duty On-Board Diagnostic System Requirements 2018
This page last reviewed October 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
OAL approved the rulemaking and filed with Secretary of State on October 3, 2019. The effective date is October 3, 2019.
The final rulemaking package was submitted to OAL on August 21, 2019. OAL has until October 2, 2019, to make a final determination.