Clean Truck Check - OBD Test Devices
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Before purchasing any previously owned CARB-certified testing device, it is recommended to test the device on a vehicle before final sale.
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.
Please note that Continuously Connected Devices may be sold by resellers and/or telematics providers whose company name is different from the certified vender, or manufacturer names. The device’s physical branding may also be different from the certified vender’s name. However, each device will have at least one unique physical identifier to indicate it is a certified device. Ask your telematics provider or reseller for proof of certification if you are unsure.
Guidance for Volvo/Mack Trucks Using the SAE J1979-2 (OBDonUDS) Protocol
More information for more information about testing vehicles with the J1979-2 (OBDonUDS) Protocol.
Telematics Devices (Continuously Connected)
In this page you will find the device information for telematics devices and manufacturers.

Geotab Inc.
2440 Winston Park Dr.
Ontario, Canada L6H 7V2
+1 (877) 436-8221
[email protected]
Devices: GO9, GO9B, GO9+ family of devices.
Executive Order: IM-004-0001-6
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector | SAE J1979 / 16-Pin Connector SAE J1979-2 | (OBDonUDS) / 16-Pin Connector
Pacific Track
Dan Rothman, VP Sales and Marketing
(949) 432-9562
[email protected]
Devices: PT40, PT40-Q
Executive Order: IM-006-0001-7
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector | SAE J1979 / 16-Pin Connector SAE J1979-2 | (OBDonUDS) / 16-Pin Connector
Zonar Systems
821 2nd Avenue, Suite 1100
Seattle, WA 98104
(888) 778-6868 (#2)
[email protected]
Executive Orders: IM-007-0001-5 , IM-007-0002-3
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector | SAE J1979 / 16-Pin Connector
Samsara Inc.
1 De Haro St.
San Francisco, CA 94103
(415) 985-2400
[email protected]
Devices: VG-55; VG54-NA; VG54-NAH; VG34
Executive Orders: IM-009-0001-3, IM-009-0002-2
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector | SAE J1979 / 16-Pin Connector
Verizon Connect
9868 Scranton Rd
San Diego, CA 92121
1-844-617-1100
[email protected]
Devices: Xirgo XT6372R; Xirgo XT6383
Executive Order: IM-010-0001-5
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector | SAE J1979 / 16-Pin Connector SAE J1979-2 | (OBDonUDS) / 16-Pin Connector
Motive Technologies, Inc.
1355 Market Street, 11th floor
San Francisco, CA 94103
1-855-434-3564
[email protected]
Devices: Motive Vehicle Gateway: LBB-3.55CA; LBB-3.6CA
Executive Order: IM-011-0001-1
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector
Handheld Devices (Non-Continuously Connected)
RA Automotive Software Solutions, Inc.
1850 Research Drive, Suite 208
Troy, MI 48083
(586) 782 5121
[email protected]
Devices: Silver Snap-Tool with Drewtech DrewLinQ, Silver Snap-Tool with DG Technologies DPA XL, Silver Snap-Tool with Kvaser Leaf Light HS v2, Silver Snap-Tool with Kvaser U100, Silver Snap-Tool with Nexiq USB-Link 2 , Silver Snap-Tool with Nexiq USB-Link 3, Silver Snap-Tool with Kvaser Leaf v3, Silver Snap-Tool with Cojali Jaltest V9 Data-Link, USB, Silver Snap-Tool with Cojali Jaltest V9 CV Link, USB
Executive Orders: IM-001-0001-8, IM-001-0002-8, IM-001-0003-8, IM-001-0004-8, IM-001-0005-8, IM-001-0006-8, IM-001-0007-7, IM-001-0008-2, IM-001-0009-2
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector | SAE J1979 / 16-Pin Connector | SAE J1979-2 (OBDonUDS) / 16-Pin Connector
HEM Data Corporation
17320 12 Mile Road
Southfield, MI 48076
(248) 559-5607
[email protected]
Devices: DAWN OBD Inspector for iOS with CAN Mini Streamer (Wireless)
Executive Order: IM-002-0001-9
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector | SAE J1979 / 16-Pin Connector
Noregon Systems LLC
7823 National Service Road
Greensboro, NC 27409
(855) 906-3491 (option 3)
[email protected]
Devices: Truck Check Up with DLA+ 3.0 (USB), Truck Check Up with DLA+ 3.0 XBT Adapter (Wireless), DLA+ 3.0 Adapter (Wireless)
Executive Orders: IM-003-0001-9, IM-003-0002-9
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector | SAE J1979 / 16-Pin Connector
DG Technologies
33604 West Eight Mile Road
Farmington Hills, MI 48335
(248) 888-2000
[email protected]
Devices: DPA INSPECT with DPA XL, DPA INSPECT with DPA 5 Pro
Executive Orders: IM-005-0002-9, IM-005-0003-9
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector | SAE J1979 / 16-Pin Connector
Opus Inspection, Inc.
3225 Gateway Road Suite 450
Brookfield, WI 53045
(855) 766-4323
[email protected]
Devices: Opus Clean Truck with Opus Clean Truck OBD Device Kit
Executive Orders: IM-008-0001-8
OBD Protocols/Connector**: SAE J1939 / 9-Pin Connector | SAE J1979 / 16-Pin Connector
*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.