OBD Test Devices
- Clean Truck Check (HD I/M)
- Tester Training Course & Exam
- DMV Registration Notice with CARB Non-Compliant Vehicle Warning
- Fact Sheets, Guides, & Videos
- Reporting Database
- Upcoming Requirements
- Credentialed Testers
- OBD Test Devices
- Smoke Opacity Manufacturers with SAE J1667-Compatible Meters
- Vehicle Emissions Control Equipment Inspection Form
- Vendor Device Certification
- Job Opportunities
- Meetings & Workshops
The following devices meet the OBD submission requirements as specified in Title 13, California Code of Regulations (CCR), Section 2196.3(a)(3) of the Heavy-Duty Inspection and Maintenance Regulation, and Title 13, CCR, Section 2193(f) of the Periodic Smoke Inspection Program. Only CARB-approved OBD test devices can be used when performing compliance tests on eligible vehicles for the Clean Truck Check program or when submitting OBD data to demonstrate compliance with the Periodic Smoke Inspection Program.
This listing does not constitute an endorsement of these products by CARB. Parties interested in purchasing this equipment are encouraged to reach out to the device vendors themselves and determine which equipment is most appropriate for their application. This list is subject to change and CARB will add new potential testing devices for use once the vendor demonstrates to CARB that a testing device meets the OBD submission requirements.
|OBD Protocol / Port / Connector*|
This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports.
This device supports 9-pin SAE J1939 diagnostic ports.
* The most common protocols for Heavy-Duty/Medium-Duty vehicles are SAE J1939 and J1979. In general, vehicles with Ford/Hino/Isuzu/Volvo engines are using the SAE J1979 (or OBD II) connector, and vehicles with Cummins/Detroit Diesel/Navistar/Paccar engines are using the SAE J1939 connector.