OBD Test Devices
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The California Air Resources Board (CARB) has issued Executive Orders (EO) for the following devices that meet the requirements for periodic On-Board Diagnostic (OBD) vehicle emissions testing starting in 2024 as specified in Title 13, California Code of Regulations (CCR), Section 2196.3(a)(1) and (2) of the Heavy-Duty Inspection and Maintenance (HD I/M) Regulation. Only CARB-certified OBD test devices can be used when performing periodic compliance tests on eligible vehicles for Clean Truck Check.
Please reach out directly to device vendors to purchase CARB-certified OBD test devices for your vehicles/fleet. This list is subject to change and CARB will include additional certified test devices when vendors complete the certification process and are issued an EO for their device.
Guidance for Volvo/Mack Trucks Using the SAE J1979-2 (OBDonUDS) Protocol
Click Here for more information about testing vehicles with the J1979-2 (OBDonUDS) Protocol.
Non-Continuously Connected Devices
(scroll down for list of continuously connected devices)
EO # | Vendor / Contact Information | Non-Continuously Connected (NCC) Devices* | OBD Protocol / Port / Connector** |
RA CONSULTING GmbH RA Automotive Software Solutions, Inc. | Silver Snap-Tool with Drewtech DrewLinQ | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
RA CONSULTING GmbH
| Silver Snap-Tool with DG Technologies DPA XL | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
RA CONSULTING GmbH
| Silver Snap-Tool with Kvaser Leaf Light HS v2 | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
RA CONSULTING GmbH
| Silver Snap-Tool with Kvaser U100 | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
RA CONSULTING GmbH
| Silver Snap-Tool with Nexiq USB-Link 2 | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
RA CONSULTING GmbH
| Silver Snap-Tool with Nexiq USB-Link 3 | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
| IM-001-0007-2 | RA CONSULTING GmbH
| Silver Snap-Tool with Kvaser Leaf v3 | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. |
HEM Data Corporation HEM Data Corporation | DAWN OBD Inspector for iOS with CAN Mini Streamer (Wireless) | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
Noregon Systems LLC Noregon Systems LLC | Truck Check Up with DLA+ 3.0 (USB) | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
Noregon Systems LLC
| Truck Check Up with DLA+ 3.0 (Wireless) | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
DG Technologies DG Technologies | DPA INSPECT with DPA Classic | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
DG Technologies
| DPA INSPECT with DPA XL | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
DG Technologies
| DPA INSPECT with DPA 5 Pro | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. | |
| IM-008-0001-3 | Opus Inspection, Inc. Opus Inspection, Inc. | Opus Clean Truck with Opus CleanTruck OBD Device Kit | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. |
Continuously Connected Devices
EO # | Vendor / Contact Information | Continuously Connected (CC) Devices* | OBD Protocol / Port / Connector** |
| IM-004-0001-1 | Geotab Inc. Geotab Inc. | GO9, GO9B, GO9+ family of devices. | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. |
| IM-006-0001-3 | Pacific Track, LLC Pacific Track | PT40 | This device supports both 9-pin SAE J1939 and 16-pin SAE J1979 diagnostic ports. |
Zonar Systems Zonar Systems | V4, V4 Base, V4 Essential, V4E-NBT, VT4 FSA, VT4, VT4 Base FSA, VT4 Base, VT4 Essential, VT4 Essential FSA, VT4E-NBT, VT4E-NBT FSA, V4 Base 2, VT4 Base 2-FSA, VT4 Base 2 | This device supports the 9-pin SAE J1939 diagnostic port. | |
| IM-007-0002 | Zonar Systems Zonar Systems | V4, V4 Base, V4 Essential, V4E-NBT, VT4 FSA, VT4, VT4 Base FSA, VT4 Base, VT4 Essential, VT4 Essential FSA, VT4E-NBT, VT4E-NBT FSA, V4 Base 2, VT4 Base 2-FSA, VT4 Base 2 | This device supports the 16-pin SAE J1979 diagnostic port |
| IM-009-0001 | Samsara Inc. Samsara Inc. | VG-55; VG54-NA; VG54-NAH; VG34 | This device supports the 9-pin SAE J1939 diagnostic port. |
*NCC means non-continuously connected; these scan tool-type devices can be used for testing events on multiple vehicles. CC means continuously connected; these are telematics devices that are assigned to one vehicle for on-going testing events.
** The most common protocols for Heavy-Duty/Medium-Duty vehicles are SAE J1939 and J1979. In general, vehicles with Cummins/Detroit Diesel/Navistar/Paccar engines are using the SAE J1939 connector, and vehicles with Ford/Hino/Isuzu/Volvo engines are using the SAE J1979 (or OBD II) connector.