Regulations for Emissions from Vehicles and Engines

Final Rule for Modification of Federal Onboard Diagnostic Regulations for: LD Vehicles, LD Trucks, MD Passenger Vehicles, Complete HD Vehicles and Engines Intended for Use in HD Vehicles Weighing 14,000 Pounds GVWR or Less

Rule Summary

In this action, EPA finalized requirements associated with the Federal on-board diagnostic (OBD) system regulations that were withdrawn from a prior direct final rule. On June 17, 2003, EPA published both a direct final rule and a concurrent notice of proposed rulemaking (68 FR 35972 and 68 FR 35830 respectively) to amend and revise certain provisions of the Federal OBD regulations. EPA published the direct final rule believing that no adverse comments would be received. However, due to the receipt of an adverse comment, EPA published a partial withdrawal notice on August 14, 2003 (68 FR 48561) withdrawing two specific regulatory amendments included in the direct final rule, and the remaining provisions of the direct final rule became effective on August 18, 2003. This action finalized the portion of the direct final rule that was withdrawn, with revisions and clarifications suggested by commenters during the public comment period.

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Rule History

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