The Best J1939 Scan Tool of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best J1939 Scan Tool of 2022. Check our ranking below.

2,356 (random num) Reviews Scanned

Rank No. #1

KZYEE KC601 Heavy Duty Scan Tool, Diesel Truck Diagnostic Scanner Transmission DPF Code Reader and Eraser with Live Data/ECU Info for J1587/J1708 J1939 Trucks

❶【What is the KC601】 It is the latest portable vehicle heavy duty code reader. You can use it to quickly and efficiently read DTCs in the vehicle's electrical control system, diagnose the fault location and find out the cause of the fault. Good for all auto repair shops to read and clear fault codes and read live data.
❷【Powerful Functions】KC601 scanner is able to read and clear fault codes of all major systems, including engine, transmission, ABS, and supports checking body, chassis, cruise, instrument cluster, gateway and other control modules. Equipped with a standard OBDII diagnostic jack, allowing you to diagnose DTCs in your vehicle's electrical control system anytime, anywhere.
❸【Unmatched Compatibility】KZYEE's KC601 diagnostic scanner supports heavy-duty vehicles in compliance with standard protocols (J1939 or J1587/J1708). Covers most ECU, compatible with Cummins, Freightliner, International, Kenworth, Mack, VOLVO, etc. Power is supplied directly from the vehicle. Included are both a 6-pin and 9-pin cable for maximum vehicle compatibility and a micro USB cable for internet update.
❹【User-friendly Design】The 2.8-inch, 320*240 LED display meets the operating habits of each user. The well-designed appearance, menu and functions of the products support the all-in-one function of OBD/EOBD vehicles, multi-language and LED -guided operation. Easy operation and high practicability
❺【What You Will Get】 ➤KZYEE KC601 high performance code reader, user manual, USB cable, storage bag, OBDII cable and diesel-6 and diesel-9 cable. KZYEE offers 30 days return policy & always technical support & friendly customer service.

Rank No. #2

Diesel Laptops Nexiq USB Link 3 Wired Edition with Repair Information & Diagnostic Software

12 Month Warranty
Includes 9-pin, OBDII, & 6-pin connectors
Includes 90-days of Diesel Repair Professional Subscription. Fault codes troubleshooting trees, wiring diagrams, labor time guides, & much more.
Includes Diesel Explorer - View & Clear fault codes, view live data, download ECM reports, & more.
Wired Edition (No Bluetooth or Wifi)

Rank No. #3

LAUNCH X431 PRO3S+Smartlink HD Heavy Duty Truck Scanner,2024 Top Diesel&Gasoline Bidirectional Diagnostic Scan Tool with J2534 Reprogramming,Topology Map,60+Service,ECU Coding,CANFD &DOIP,Free Update

【2024 NEWEST LAUNCH 1st Advanced Scan Tool Compatible With 12V&24V Vehicles】Design for Passenger&Commercial Vehicles 2 in1,work for Cars/Trucks/buses/trailers/excavators/diesel engine/pick-up/etc.
【J2534 Reprogramming with Smartlink C】Advanced OEM J2534 reprogramming,Helps access direct data online, replace existing software/firmware in ECU,program new ECUs and fix software-controlled issue.
【Over 60 Service Reset Functions + Bi-Directional + ECU Coding 】This scan tool can support ECU Coding,60+ reset service functions like SAS/EPB/TPMS/DPF/Oil/Brake/ABS Bleed, Injector coding, etc.
【2024 BEST Advanced Hardware & All Systems Diagnosis+Topology Display 】Support All systems Diagnostic including ENG, AT, ECM, TCM, ABS, SRS, BCM, BMS, TPMS, SAS, Fuel System, Light System and more.
【Wider Vehicle Coverage of 12V & 24V Vehicles + 24 Languages】LAUNCH X431 PRO3S+SMARTLINK HD automotive scanner is ALL-IN-ONE Scan Tool for 12V cars and 24V Heavy-duty trucks support CANFD & DOIP.

Rank No. #4

Autel MaxiSys MS908CV II: 2025 Heavy Duty Truck Scanner Upgrade of MS908CV, Same as MS909CV, Semi Truck Tool w/ J2534 ECU Programmer, Coding, Active Test, 64 Service, Bluetooth Diesel Diagnostic Tool

【Why We Updated MS908CV to 2025 MS908CV II】Seeking a great leap forward in faster diagnostic speed, 2025 Autel New Release MS908CV II renews full hardware with the same CPU as MS909CV, fast Android 10, larger 4+128GB, and lasting 15000mAh. Latest tech & updates provide future-proofing power to more CV/HD vehicles (class 1-9). Heavy duty truck scanner MS908CV II comes with improvements in 64+ services, adds 3000+ active tests, enhances ECU coding & J2534 programming for better multitasking.
【64+ Services, 1 Scanner for 99% Issues】An affordable choice to compete with OEM scanners with more advanced functions while having less budget. Autel MS908CV II features 39+ services & 25+ adaptions for 150+ brands that are easy to navigate and more outstanding than other CV diagnostic scan tools. Help to solve more HD special issues including oil reset, VGT learning, SAS reset, injector coding, air suspension, ABS bleeding, etc.
【Local-Smith Coding + J2534 Programmer】Same as MS909CV, MS908CV II features advanced CV ECU coding that normal diagnostic tools don't support. It allows you to adjust vehicle road speed, flash CV personalized functions, repair failing coding processes, etc. A J2534 programmer designed for CV helps to fix drivability, erase fault codes, program the latest software version, etc. without using expensive OE scanners but functioning well at OEM level.
【OE All-System Diagnosis & Active Test】Work on 150+ makes of CV vehicles, MS908CV II conducts simplifying all procedures as the priority, runs full checks for complex CV systems like ECAS, ABS/EBS, reads DTCs to locate the fault, clears DTCs to turn off the MIL, retrieves live data to learn about the details. 3000+ active tests act more accurately but quicker problems location without bulky parts disassembling. Even minor problems can be caught/confirmed.
【2025 Top Truck Scanner, Complete Ki】New hardware upgrades have the MS908CV II Semi truck scanner a longer lifespan and quick payback. Octa-core CPU + Android 10OS for faster task handling. 4GB/128GB adds larger storage. 9.7”, 1536*2048 screen with more intuitive display. 15000mAh battery for 15+ hours of continuous operation. Wirelessly BT with 230+ meters working range. The complete kit provided includes various adapters that are designed for diagnosing aging class-3 CV vehicles.

Rank No. #5

ANCEL HD3600 Heavy Equipment Diagnostic Tool with DPF Regen, Full System Heavy Duty Truck Scanner Machinery Scan Tool Diesel Code Reader Fit for Cummins, Caterpillar, John Deere, Komatsu and More

🎁【Extra Saving-Official Protective Case or BST200 Battery Tester】We offer an ANCEL Official Protective Case or BST200 Battery Tester valued to encourage all of you to try this 2023 newest heavy equipment diagnostic tool ANCEL HD3600. Just click "Promotion Available" below the price and add both to your cart.
【Superb & Wide Compatibility】ANCEL HD3600 Heavy Duty Scanner supports all major construction machinery vehicle models that conform to standard protocols (CDL, SAE J1708/J1939/J1850), such as Caterpillar, Komatsu, John Deere, Volvo, Hitachi, Bobcat, Yanmar, Case. Moreover, it supports not only standard diesel OBD protocols (including the latest J27145), but also standard OBDII protocols. Obviously, it covers almost all vehicles and has greater compatibility than other truck scanner on the market.
【DPF Regeneration】Supports exclusive OEM-level DPF function for Caterpillar, John Deere, Volvo, Komatsu, Bobcat diagnosis. Forced regeneration is performed, including DPF regeneration, DPF reset, BlueTec, forced DPR regeneration, DPR reset, differential pressure test, DPD forced regeneration etc., helps you better understand and solve the exhaust aftertreatment system problems, gets better MPG, throttle response, longer DPF life, less downtime and frequent regeneration (passive).
【Manufacture-Level & OBD-Level Diagnostic】HD3600 performs full system diagnosis on construction equipment vehicles and trucks. When the warning lights of the engine, ABS, airbag, transmission or other system flash, HD3600 can help you easily know how serious the fault is. It also do OBD test, such as reading codes, clearing codes, reviewing live data, retrieving vehicle information, etc., so that you can get accurate information, avoid auto repair fraud and save time and money in maintenance.
【Unique Display Wiring Diagram Feature】With the technology of wiring diagram display, you can connect HD3600 to vehicle with the jumper or jumper box without destroying the ECU or connector pins or cable insulation, helping you diagnose various electrical signals of Cummins engine. Meanwhile, you can connect or disconnect the wiring harness by plugging and unplugging the corresponding connector on the jumper box, so even the absence of diagnostic connectors will not delay your work in diagnosis.

Rank No. #6

Green 9pin J1939 Type 2 to 6pin J1708 Adapter

Green 9pin J1939 Type 2 to 6pin J1708 Adapter
Fit most freightliner trucks with 6pin
This adapter turns 6pin J1708 to type 2 J1939 female port
The adapter is overmolded strongly and safely
It's used for fleet management ELD device and coder readers .

Rank No. #7

Autel MaxiSys CV Scanner MS908CV, 2023 Heavy Duty Truck/Semi Truck/Bus Diagnostic Scan Tool, J2534 ECU Programmer, Online Coding, HD Diesel & Gasoline Bidirectional Scanner, 25+23 Reset, OE Diagnose

🚛【2023 PRO SCAN TOOL, DESIGNED FOR HEAVY DUTY】Autel MaxiSys MS908CV is designed for 99% heavy/ semi/ light trucks to perform ECU Coding, Bi-directional Control, Full Diagnose, 48+ Services etc. Moreover, MS908CV comes with 14pcs adapters, JW 1-10 jumper set, Plug Commins-8 and UNI-4, which not only for standard diesel OBD II vehicles but also for non-standard OBD trucks, including Freightliner, Kenworth, Peterbilt, Volvo, Mack, Hino, Isuzu etc.
🚛【ADVANCED ECU CODING】This professional truck scanner MS908CV has advanced ECU coding features to level up your trucks. It allows you reprogram adaptive data for certain components after making repairs or replacements, modify existing parameter values to reflash higher-level functions, disable useless features, improve vehicle diesel efficiency, drivability and durability. Online ECU coding also allows obtaining the online data from server when code data is lost, easily solve vehicle problems.
🚛【OE-LEVEL BI-DIRECTIONAL CONTROL】Autel MaxiSys MS908CV enables bi-directional control ECM and transmit commands to vehicle modules to perform specific test, quickly and accurately pinpoint the fault causes. Such as control engine idle speed to solve idle chatter problem, test fan operation to diagnose abnormal temperature, control windows/Door up/down, fuel pumps, AC on/ off, emission leak test, mirror fold/unfold, etc. This features will help you save loads of time and win more business.
🚛【48 SERVICE: 25 SPECIAL & 23 ADAPTATIONS】Autel CV MS908CV top commercial car diagnostics scanner comes with 48 services: 25+ hot service such as Oil Reset, Inject Coding, EPB, ABS, SRS, Suspension etc; 23 adaption functions like O2 Sensor Calibration, D-P-F, Fuel Pressure Adaptation, all sizes of DOC/D-P-F Instant Replacement Reset for trucks, passenger cars, semi-trailer tractors, passenger trucks. ✨Please send VIN to 🚍auteldirect@ outlook . com🚍 check compatibility.
🚛【ALL-SYSTEM SCAN FOR TRUCKS】Autel MaxiSys MS908CV truck scan tool performs all systems scan on heavy duty trucks and passenger cars, such as Engine, Body & Chassis Controller, Instrument Panel System, ABS etc, which can read/ clear DTCs, view live data in text, graph, analog etc. Autel MS908CV can diagnose Cummins/ Caterpillar/ Bendix/ Detroit/ Paccar/ Perkins/ Maxxforce Engines, Wabash ABS Trailer Brakes, Wabaco Air Cylinder, Haldex ABS/ EBS and Allison, Eaton Transmissions etc.

SaleRank No. #8

Autel MaxiSys CV MS908CV Heavy Duty Truck Diagnostic Tool, 2023 Full Bidirectional Diesel/Gasoline Semi Truck Scanner, J-2534 ECU Programming & Coding, 25 Services, 23 Adaptions, FCA AutoAuth

🏅【AUTEL MS908CV: MADE FOR COMMERICAL VEHICLES】Autel MS908CV CV diagnostic tool can perform all-over diagnostics on 150+ brands of commercial vehicles, light duty, semi-truck, heavy duty trucks (from class 1 to class 9), buses and other special machinery. Besides the diagnostics, MaxiSys MS908CV with J2534 programmer has dealer-level ECU Coding functions to help you fix any ECU related issues. No need to buy many scanners by manufacturer, one Autel MS908CV will solve all your puzzles.
🏅【DEALER-LEVEL ECU CODING, SAME AS AUTEL ELITE/ MS908S PRO】As a high-end CV diagnostic tool, Autel MS908CV is featured with advanced ECU Coding. It can retrieve and re-flash the control modules info, rewrite adaptive data for certain components after replacement, and fix the issues such as drivability, fuel efficiency, power loss and improve durability of mechanical parts. Note: ECU Coding is not universal to all cars, please send VIN to autelauthorized @ outlook. com to check before order.
🏅【J2534 ECU PROGRAMMER, WORKS WITH OE FACTORY SOFTWARE】Autel MaxiSys MS908CV truck diagnostic tool comes with a J2534 programmer (valued $1000) to help you pass-thru the gateway, it's compatible with SAE J2534-1&-2 protocols and it can access to OE manufacturer's updates to update the firmware to the newest, and perform further ECU programming & coding. NOTE: J2534 is not universal compatible with all OE software, please check with your vehicle make/ dealer for compatibility before order.
🏅【FULL BI-DIRECTIONAL CONTROL, 200% EFFICIENT TROUBLESHOOTING】Autel MS908CV commercial vehicle diagnostic scan tool has full bi-directional control capability over various CV systems/ components, and is able to command the components to perform specific tests to pinpoint faults in the quickest way, It can conduct tests such as EVAP Test, Cylinder Test, Cylinder Compression Test, E-G-R Test, Window/ Door/ Roof Test, Fuel pump on and off, Cycling the a/c clutch on and off and more.
🏅【25 SERVICES+ 23 ADAPTATIONS】Autel MS908CV professional HD scanner can perform 25+services like Oil Reset, Injector Coding, D-P-F, ABS bleeding, SAS, Throttle, Cylinder, Trans Adaptation etc, and 23 adaptation functions such as Boost Calibration, Rack Sensor Calibration, Timing Calibration, Monitor Throttle Position Sensor, Fuel Pressure Adaptation and etc. Service functions vary from car to car, kindly send VIN to autelauthorized @ outlook .com to check compatibility before order.

Rank No. #9

ANCEL HD3400 Plus Full System Heavy Duty Truck Scanner - DPF Regen, Free Lifetime Updates - 98% Truck Compatibility - Diesel Diagnostic Scan Tool for Cummins, Detroit, Caterpillar, Paccar & More

Run Your DPF Cleaner, Longer -Renew, Don't Replace: Safeguard your truck from breakdowns and and high repair costs with focused DPF care. Opt for HD3400, featuring DPF regen, reset, DPR state control, and more, tailored for engines like Cummins, Detroit, Caterpillar, etc. Imagine this: easy and cost-effective DPF regen saving you from potential $10,000 to $30,000 in repairs. Unlock compliance-free operation for improved fuel efficiency, extended engine life, and significant cost savings
Designed for Cummins Engine Vehicles: Fits almost all Cummins engines (ISB, ISC, ISD, ISG, ISK, ISL, ISX, ISM, ISN, QSB, X12, X15, B6.7, L9, L9N, QSM11, and more) commonly found in trucks like Freightliner, Kenworth, International, Peterbilt, Mack, Volvo, Western Star, Autocar, Terex, and school buses like Thomas/Blue Bird, It's also compatible with Komatsu/Sany machinery, Agrifac vehicles, RVs, and more
Maximize Caterpillar Engine Trucks' Potential: HD3400 Plus diesel scanner, exclusively for Caterpillar engines (C7, C9, C11, C13, C15, C32, and more) commonly found in trucks like Caterpillar, Freightliner, Peterbilt, Kenworth. Features include code reading/clearing, live data streaming, ECU retrieval, DPF regeneration and more. Unleash your Caterpillar engine's power
Designed for Detroit Engine Trucks: This heavy duty truck scan tool is compatible with a wide range of heavy duty commercial trucks – class 7 and class 8, medium duty trucks, light duty trucks and semi-trucks equipped with Detroit engines, including DD13, DD15, DD16, Series 50, Series 60, MBE 900, MBE 4000, OM501, OM502, DDDL 6, and DDDL 7
Designed for Paccar Engine Trucks: This heavy-duty truck scanner diagnostic tool is specifically designed for Paccar engines, including Paccar PX-7, PX-9, MX-11, MX-13

SaleRank No. #10

LAUNCH X431 V+ PRO 2024 Elite Bluetooth Scan Tool, OEM Topology Mapping, Work on HD Trucks, 41+ Services&Online Coding, 10.1 Inch Bigger Car Scanner, Global Ver., 2-Year Free Update, AutoAuth FCA SGW

🎁【FREE TPMS Activation Tool + CR319 OBD2 Scanner】Just Contact Seller via 📩launch-aftersales @ outlook. com to get a FREE TPMS Tool which works for GM cars & a FREE must-have OBD2 scanner for every DIYer or car drivers: CR319. 🎁【Great Gift Idea】: LAUNCH X431 V+ PRO ELITE is a top present choice for your father, husband, brother or boyfriend if they own a repair shop, or they are an auto technician. We provide 2 YEARS Free WiFi Upgrade & 5 Years Warranty.
🥇【2024 Elite Version Add New Advanced OEM Functions】 🎈🎈From now on, update your X431 V+ Pros to V 7.00.012 to get Topology Mapping function. 👍As the most popular LAUNCH X431 scanner, X431 V+ Pros has been recommended as "Best Professional Diagnostic Tool" by Amazon editors! ✅FREE VAG Guided Function(compatible with VW,AUDI,SKODA,SEAT); ✅AutoAuth for FCA SGW(Free); ✅Compatible with HD module, support 24V diesel heavy-duty trucks; ✅ADAS mobile/ADAS pro perform ADAS calibration.
【41+ OEM Level Services (Vehicle Coding / Adaptions / Relearns / Calibrations / Initialization)】 The 100% original LAUNCH diagnostic scanner provides 41+ reset functions for mechanics to do daily auto maintenances in workshops, such as Oil Reset, TPMS Reset, ABS Bleeding, Injector Coding, Throttle Adaptation, Gear Learning, Suspension Reset, Seats Calibration, etc. ➤You will get 100+ reset functions if you enter the "vehicle brand" page, "system" and then "special" functions.
【LAUNCH X431 V+ Pro Elite--ECU Online Coding & Variant Coding】 The high-end car scanner elite tool – LAUNCH X431 V+ Pro works as an OEM scanner to customize cars as needed via advanced ECU coding. To boost business & maximize profit, Launch X431 V+ Pro3 can match/re-code/initialize the ECUs with replaced components and refresh hidden features. Online Coding is compatible with VW, Audi, BMW, Porsche,etc. And the Offline Coding is available for Nissan, Nissan-GTR, Infiniti, Hyundai, etc.
【LAUNCH X431 V+ Pro Elite--Bi-Directional Control/Active Tests】 This LAUNCH bidirectional scan tool can output commands to a vehicle’s ECUs, read the ECU data, and monitor the operation of the actuators. Through active tests on certain components, such as a/c fan, inside mirrors, headlamps, windows, and horns, this bidirectional scanner will let you quickly know whether a specific system, component, or subsystem is functioning properly or not, helping you locate the car issues precisely.

Last update on 2023-05-21 / Affiliate links / Images from Amazon Product Advertising API

How Do You Buy The Best J1939 Scan Tool?

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Brand Value: Every brand of J1939 Scan Tool has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
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FAQ:

Q: What is the J1939 data link?

A: SAE J1939 defines five layers in the seven-layer OSI network model, and this includes the Controller Area Network (CAN) ISO 11898 specification (using only the 29-bit/”extended” identifier) for the physical and data-link layers. Under J1939/11 and J1939/15, the data rate is specified as 250 kbit/s, with J1939/14 specifying 500 kbit/s.

Q: What is J1939 software stack?

A: What is J1939 stack? J1939 stack is an embedded software stack with layered architecture, compliant with SAE J1939 standard. This pre-tested software stack, designed by our embedded automotive engineers, can be easily integrated with commercial vehicle applications for diagnostics and communication services.

Q: What is diagnostic scan tool?

A: A scan tool is a car diagnostic tool that can exhibit a wide range of features. Scan tools typically include a code reader, the ability to view and sort live data, and some type of knowledge base.

Q: What is an automotive scan tool?

A: An automotive scan tool (scanner) is an electronic tool used to interface with, diagnose and, sometimes, reprogram vehicle control modules.