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December 07 2023

On-board diagnostic systems

System OBD

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The Critical Importance of On-Board Diagnostic

The Critical Importance of On-Board Diagnostic (OBD) Systems in Vehicle Environmental Performance

On-Board Diagnostic systems are integral self-diagnostic tools embedded within vehicle computers, playing a pivotal role in monitoring components that might impact a vehicle’s environmental performance. Their primary goal is to ensure that the vehicle remains as clean as possible over its entire life.

On September 29th, the California Air Resources Board (CARB) issued significant guidelines pertaining to OBD II and Heavy-Duty OBD systems, specifically focusing on production vehicle/engine evaluation testing and manufacturer self-testing. These guidelines provide detailed insights into CARB-developed templates, which manufacturers can utilize to report testing outcomes required by OBD II and Heavy-Duty OBD regulations. Find the link of the Guidance for On-Board Diagnostic II and Heavy-Duty On-Board Diagnostic Production Vehicle/Engine Evaluation Testing and Manufacturer Self-Testing Reporting Documentation.

These reporting templates are crucial for ensuring compliance with stringent environmental standards and reflect the automotive sector’s ongoing commitment to reducing environmental impact. The templates : https://ww2.arb.ca.gov/resources/documents/obd-resources

At UTAC, we are dedicated to providing expertise and support regarding these U.S. regulations. Our team is ready to assist with inquiries and guide you through the complexities of OBD standards.

Do not hesitate to contact us for any assistance or clarification.


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