Best Bluetooth OBD2 Scanner for Diesel

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A Bluetooth OBD2 scanner should be simple to use and include a variety of diagnostic options. The best bluetooth obd2 scanner for diesel can at the very least verify error codes and turn off check engine lights. Advanced ABS diagnostics, freeze frame, live data, and other features are available on some scanners. A scanner for diesel could be a handy tool even if you aren’t a trained mechanic. You can not only diagnose and fix minor automobile problems, but you can also get a better idea of potential costs that might be spent for corresponding repairs or replacements.

4 Best Bluetooth OBD2 Scanner for Diesel Review

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ANCEL HD601 Heavy...image ANCEL HD601 Full System Heavy Duty Truck Scan Tool Check Prices
ANCEL HD3100 HDOBD...image ANCEL HD3100 HDOBD Heavy Duty Truck Scan Tool Check Prices
ANCEL HD3400 PLUS...image ANCEL Heavy Duty Truck Scanner HD3400 Diesel Scan Tool Check Prices
LAUNCH X431 PRO3S+Smartlink...image [2022 New]LAUNCH X431 PRO3S+HDII Check Prices

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1. Ancel HD 601

For transparency, please note that some of the links on this website are Amazon Associate links. This means that I may earn a small commission if you make a purchase through these links. The use of such links comes at no additional cost to you.

Ancel HD 601 is a heavy-duty OBD2 Scanner for diesel with Bluetooth connectivity capability. The scanner supports full system diagnosis and works on most heavy trucks with the capability of HD OBD Diesel Auto Diagnostic. It’s a 2-in-1 scanner compatible with the most recent protocols.


Ancel HD 601 supports standard protocols and is definitely compatible with major heavy-duty trucks like Ford, Detroit, Paccar, Cummings, International, Peterbilt, Perkins, or Freightliner. Furthermore, you can also use Ancel HD 601 to scan and diagnose most OBDII vehicles. Different number pins are supported with compatible cables included in the package.

Scanning Capability

As a professional-grade scanner, Ancel HD 601 is capable of full system diagnosis with a built-in DTC library and supports the latest protocols. You definitely can use Ancel HD 601 to read and clear codes as well as Freeze frames and live data viewing. In other words, it’s certainly capable of telling what’s actually wrong with your truck.


Ancel HD 601 has basic yet reliable functionality for your diesel vehicle. Not only that you can indeed retrieve code but you can also view what it actually means from the built-in DTC library. Ancel sustains the functionality of this particular scanner with lifetime free internet updates so you can keep updated with new codes and diagnostic references.

2. ANCEL HD3100

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ANCEL HD3100 is another HDOBD scan tool for heavy-duty trucks and other vehicles that support OBD2 code readers. It offers accessibility and efficiency when it comes to diagnosing the diesel system. Wide compatibility, scanning capability, and functionalities make ANCEL HD3100 irresistible.


ANCEL HD3100 is compatible with trucks with standard and private protocols. It should support your trucks as well as light trucks, minivans, and cars with an OBD II port.  ANCEL HD3100 has the widest compatibility in its class while maintaining slightly wider functionality than HD601.

Scanning Capability

ANCEL HD3100 can perform all-system scans for standard HD OBD protocols. It covers pretty much everything you can expect from a scanner including the engine, transmission, ABS/EBS, panel system, controller, and so forth. These provide you with all the necessary information to monitor and maintain corresponding parts.


ANCEL HD3100 is somewhat multifunctional with easy accessibility for mechanics or DIYers.  From scanning to printing out reviews, ANCEL HD3100 is mostly a one-click operation. It has everything you need to perform diagnosis and DIY repairs on your diesel trucks. You can access the real-time diagnostic results very easily so you can decide the best possible actions to maintain, repair, or replace corresponding components.

3. ANCEL HD3400

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Moving one level up, we have ANCEL HD3400 which is also a 2 in 1 code reader that supports all-system diesel diagnostics. While it shares all functionalities with its little brother HD3100, ANCEL HD3400 actually comes with superior DPF regeneration functions and other advantages. Coming with a considerably large screen and one-click operation on its functions, ANCEL HD3400 is certainly a game-changing scanner.\


ANCEL HD3400 is a universal diesel scanner and diagnostic tool that supports most diesel vehicles and heavy vehicles with Caterpillar, Detroit, Paccar, or Cummins. ANCEL HD3400 not only supports standard protocols but also the private protocols used in these engines. At this point, you only need to have one ANCEL HD3400 to manage a fleet of diesel vehicles.

Scanning Capability

ANCEL HD3400 is obviously capable of all-system diagnosis including reading/clearing codes, live data streaming, and retrieving ECU information for all systems including engine, transmissions, ABS, SRS, EVAP, TPMS, and so forth.  You can view all live data for all control modules. This capability is crucial if you’re looking for a strong reference for maintaining or repairing your diesel vehicles.


ANCEL HD3400 has all the functions you need to get the diagnostic jobs done but what makes it special is its superior DPF regeneration, which is actually, the best in its class since it’s the only commercial scanner that can do DPF functions on the corresponding engines. The DPF regeneration works on all engines previously mentioned with complete functions including auto regeneration, slow regeneration, status reset, data clear, and so forth.


For transparency, please note that some of the links on this website are Amazon Associate links. This means that I may earn a small commission if you make a purchase through these links. The use of such links comes at no additional cost to you.

LAUNCH X431 PRO3S+ V2.0 HDIII is a pro-class scan tool in this list that comes with advanced features.  It supports most vehicles and works as an all-in-one scanner while more than 50 services reset functions and other functionalities are supported for diesel engines. Generally speaking, LAUNCH X431 PRO3S+ V2.0 HDIII has everything you need to perform maintenance, repair, or even replacement on diesel vehicles.


LAUNCH X431 PRO3S+ V2.0 HDIII is an all-range scan tool that works on both 12V and 24V vehicles from cars to excavators and all vehicles with diesel engines.  It also supports more car brands and diesel engines than any other competitor scanners.  LAUNCH X431 PRO3S+ V2.0 HDIII is certainly a great deal if you have a fleet of multiple diesel engines onboard.

Scanning Capability

LAUNCH X431 PRO3S+ V2.0 HDIII is capable of all-system diagnosis that supports most protocols for vehicles in the range. The scanner can comprehensively scan components and controllers so you can take the necessary steps for further maintenance, repairs, and replacements.


As previously mentioned, LAUNCH X431 PRO3S+ V2.0 HDIII has a superior number of reset functions and other advanced functions. From SAS to injector coding, I can obtain them all from this scanner. You can also perform initialization, adaptation, matching, ECU coding, and bi-directional tests. You can access all the functions and interface through a super big 10.1 screen that makes live data view and stream more accessible and comfortable for users.

What to look for before buying the best Bluetooth OBD2 scanner for Diesel

Choosing the best OBD2 for diesel relies on what you intend to use it for. OBD2 scanners are capable of gathering a wide range of data about a car. Modern automobiles are equipped with sophisticated computer tech with data collecting capability that can be used for diagnostic repairs in the event of a problem.

Diesel Vehicle/Engine Compatibility

Make sure the diagnostic scan tool you purchase is compatible with the corresponding diesel engines before you buy it. Most Bluetooth OBD2 scanners are compatible with the most common brands. However, not all OBD2 scanners are suitable for exotic, premium, or sports cars.

Mechanical Comprehension

A scanner is a must-have tool for diagnosing and resolving most problems in diesel engines if you have extensive mechanical knowledge. These gadgets can also be used to assist you to get the most out of your car. An OBD2 scan tool may be all you need to understand engine codes if you only have rudimentary familiarity with cars. Spending more money on features that you won’t utilize is a waste of money.

Advanced Functions

While basic engine codes can be read by any OBD2 Bluetooth scanner, there are also many that give diagnostics for things like ABS, airbags, and O2 sensors. Paying a monthly subscription to use certain scanning functions is standard practice with several scanners.

Ease Operation

When it comes to using an OBD2 scanner, there should be no mystery involved at all. Professional mechanics might also benefit from the greatest scanners. In this category, OBD2 scanners with simple instructions and user-friendly interfaces fared the highest.


Bluetooth-enabled OBD2 scanners can be connected to a tablet or smartphone wirelessly. An application must be launched in order to communicate with the scanner. The better the diesel scanner, the more user-friendly the app is. The quality of an OBD2 diesel scanner is mostly determined by the app that goes along with it. There were a lot of good scanners and programs that didn’t crash in this area.

Data Collection Capabilities

ABS and SRS system diagnostics are included in some scanners, whereas just reading the check engine light is available in other scanners. OBD2 scanners with more functionality are recommended to give more flexibility.

Best Value for Money

Value is determined by a cross of overall scores and its total cost. OBD2 scanners with fewer functions but a lower price tag may be a better option for some users, especially if you only need to clear codes and don’t plan on using advanced diagnostics tools.


Do OBD2 scanners work on diesels?

Vehicles powered by diesel and having a GVWR of fewer than 14,000 pounds likely meet OBDII criteria for monitoring the efficiency of their pollution control systems as of the 2007 model year onward. So, OBD2 scanners can contribute to improving the efficiency of diesel.

What is diesel OBD?

In order to warn the driver/operator about any faults that could influence the vehicle’s emission performance, on-board diagnostic (OBD) systems integrate self-diagnosis functionality into the engine control system. Diesel OBD refers to on-board diagnostics on diesel engines.

Is the OBD2 scanner Universal?

OBD scanners can read a wide variety of problem codes because they are so widely available. Although some vehicles utilize generic and manufacturer-specific error codes, there are those that employ both. It’s possible that a universal OBD scanner won’t be able to read several manufacturer-specific codes.

Is a Bluetooth OBD2 scanner better than a corded OBD2 scanner?

Bluetooth scanners require an app to be installed on a phone or tablet in order to work. An OBD2 scanner with a wired connection is always going to be faster than one with a wireless Bluetooth connection, thus it may be better for reading live data.

Do all OBD scanners work on all cars?

The vast majority of OBD2 scanners and auto code readers don’t function on all vehicles. Check the compatibility of any OBD2 scanner or code reader you’re considering purchasing before making a purchase.

Final Thoughts

Think about what you need your OBD2 scanner and automobile code reader to do before purchasing one. Budget scanners may suffice if you only need to check the engine light. When it comes to DIY mechanical work, you may want to look into the best bluetooth obd2 scanner for diesel or higher-end scanners that have more capabilities. Having narrowed down your options, make sure the OBD2 scanner and code reader you choose is compatible with your diesel vehicles. You can consider the ANCEL scanners we’ve listed above as the starting point as they range from the lower to the higher price.

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