In this guide today, we are here with our in-depth review of the best diagnostic tool. There are plenty of choices with multiple websites and therefore difficult to choose the best one. We recommend to read the guide and choose the one that suits your need as we review products based on the various options, features, price, quality and many more . To avoid this dilemma, we recommend to read this guide and review. It gives you insider information on how to choose the best diagnostic tool for your needs and budget.
This is the ultimate buyers guide diagnostic tool.
Our Top Picks
5
ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic...
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ANCEL HD3600 Heavy Equipment Diagnostic Tool with DPF Regen, Full System Heavy Duty Truck Scanner...
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The Best diagnostic tool
MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Code Reader Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow
$25.00 in stock
Amazon.com
as of May 24, 2025 11:06 am
Features
- Multi-Functions - It's a practical multi-function OBD2 code reader which helps you determine the cause of the check engine light coming on, quickly read and remove diagnostic trouble codes, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information. Instead of taking car to mechanic shop, you can use it to check the trouble code and show code definition by yourself. Wide Compatibility - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Check compatibility with your vehicle model before purchasing. It can also be used for some motorcycle OBD2 system diagnosis. (Note: an additional specific adapter cable is needed. not included with this device) 2.8" LCD Display & Multi-language - Designed with a clear 2.8" LCD screen (128 x 64 pixels) - white backlight and contrast adjustment. No need any battery or charger, OBD reader gets the power directly from your vehicle through the OBDII Data Link Connector. It also supports 6 languages - English,German, Dutch, Spanish, French and Italian. This scanner is enjoyed and highly recommended by the customers worldwide. Compact Design & Easy to Use - It weighs about 12 ounces and measures 6 x 2.75 x 0.9 inches. Equiped with a 2.5 feet long heavy duty cable and the standard 16-PIN OBD connector. 6 buttons for quick operation. The plug and play design makes it user-friendly. Even if you don't have much technical knowledge, you can operate it without any hassle. "Accurate & Fast - Different with other similar scanners, the MP69033 scanner use the brand new ARM micro processor to make sure the ultra high accuracy and fast speed. With the excellent performance of the micro processor, the detailed real-time engine data can be detected and displayed on the screen in seconds. Get codes, fix the problem and turn off the CEL. If you just need a code reader to check your car, it's definitely an affordable and reliable tool.
FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light
$55.99 in stock
1 used from $44.23
Free shipping
Amazon.com
as of May 24, 2025 11:06 am
Features
- [Vehicle CEL Doctor] The NT301 obd2 scanner enables you to read DTCs, access to I/M readiness status, figure out the root reason of check engine light or MIL turned on, monitor sensors test, read live data and retrieve VIN of your vehicle. The fault code only can be cleared after repair finished by NT301, as like all the obd2 code readers' working principle
- [Accuracy & Streams] Live data graphing and logging. Accurately read error codes for most Worldwide cars, SUVs, light trucks and 12V diesels equipped with Obd2. Graphing live vehicle sensors data allows you to focus on any suspicious data and trend.
- [Worthy to Own] Recommended by most professional mechanics on Youtube. Codes analysis and Printer compatible. Unique PATENTED design, 2.8" color screen and 1-year seller assurance with EXCLUSIVE tech and service team. Plug & Play, no need to update before using. Available to windows system. NOT support ios and Mac
- [S-mog Check Helper] Read/Erase and I/M readiness hotkeys make it easy to use the car computer reader right out of the package. Red-Yellow-Green Leds and build-in speaker indicate the readiness status for confident e-missions test
- [Home Necessity] Open to global customers. No battery required, NT301 obd scanner is charged directly from the 16pin DLC in your vehicle. It is recommended as a necessity in your toolbox and great choice for Home and Autoshop Mechanics. This scanner for car only supports to read the fault code of engine system, not support ABS or SRS
Zmoon OBD2 Scanner Diagnostic Tool, Vehicle Check Engine Code Readers with Reset & I/M Readiness & More, Car OBDII/EOBD Diagnostic Scan Tool for All Vehicles After 1996
$19.99 in stock
2 new from $19.99
Free shipping
Amazon.com
as of May 24, 2025 11:06 am
Features
- Car Diagnostic Scanner with Full OBD/EOBD Function: Read codes and clear codes, 10000+ fault codes available for query, viewe freeze frame, I/M readiness and historical I/M Data, live data stream and live curve (car speed, battery voltage etc), car information reading, oxygen sensor test, EVAP test, calculate load value, engine coolant temperature, get engine speed. It has all the OBD functions you need.
- 2.8'' HD Color Screen: Compared with traditional OBD scanners, Zmoon 2.8'' HD color check engine code reader displays more and richer content, which will not cause eye fatigue after long-term use. And the body design is very suitable for one-handed holding.
- Compatible with Most Vehicles & 7 Languages Available: OBDII/EOBD car scanner diagnostic for all cars after 1996 and newer American/European/Asian cars, supports English, Spanish, French, German, Italian, Russian and Dutch.
- Plug and play: Directly powered by the car, even beginners can quickly master and use the car code reader proficiently. No need to download APP, it is more accurate and stable than the wireless bluetooth code reader! And there are 3 statu lights on the device to remind you if your car is faulty, which is very friendly to beginners.
- 10,000 DTC Lookup: Built-in 10,000 DTCs, the old model obd2 usually only have 3,000 DTC. So the V317 car scanner has a huge advantage, which means that this obd2 scanner can better help diagnose and solve your vehicle faults. This is a great option if you want to replace or upgrade an existing car scanner.
FOXWELL Car Scanner NT604 Elite OBD2 Scanner ABS SRS Transmission, Check Engine Code Reader,Diagnostic Scan Tool with SRS Airbag Scanner,Car Diagnostic Scanner for Cars
$169.99
in stock
Amazon.com
as of May 24, 2025 11:06 am
Features
- [Easy to Use--Work out of box] + [FOXWELL 2025 New Version] FOXWELL NT604 Elite scan tool is the 2025 new version from FOXWELL, which is designed for those car owners who want to figure out the cause issue before fixing the car problem via scanning the most common systems like abs srs engine and transmission.The NT604 Elite diagnostic tool comes with latest software, which can be used out of box. No need to waste time to download the software first.
- [Affordable] + [Reliable Car Health Monitor] Will you be confused what happen when the warning light of abs/srs/transmission/check engine flashes? Instead of taking your cars to dealership, this foxwell scanner will help you do a thorough scanning and detection for your cars and pinpoint the root cause. It will t-urn off the warning light car after the problem is fixed.TIPS: Airbag crash/collision data can NOT be cleared even you replace the new airbag.
- [5 in 1 Diagnostic Scanner] Compared with those auto scanners (50-100), NT604 Elite code scanner not only includes their OBDII diagnosis but also it can be an abs/srs scanner, transmission and check engine code reader. When it’s an odb2 scanner, you can use it to check if your car is ready for annual test through I/M readiness menu. In addition, live data stream, built-in DTC library, data play back and print, all these features are a big plus for it. Note: doesn't support maintenance function.
- [Fantastic AUTOVIN] + [No extra software fee] Through the AUTOVIN menu, this NT604 Elite car scanner allows you to get your V-IN and vehicle info rapidly, no need to take time to find your V-IN and input one by one. What's more, the NT604 Elite abs srs scanner supports 60+ car makes from worldwide (America/Asia/Europe). You don’t need to pay extra software fee.
- [Solid protective case KO plastic carrying bag] + [Lifetime update] Almost all same price-level obd scanner diagnostic tool only offers plastic bag to hold on the scanner.However, NT604 Elite automotive scanner is equipped with solid protective case, preventing your obd2 scanner from damage. Then you don’t need to pay extra money to buy a solid toolbox.
ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool-Black
$20.99 in stock
Amazon.com
as of May 24, 2025 11:06 am
Features
- CEL Doctor: The ANCEL AD310 is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on, quickly read and clear diagnostic trouble codes, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information. Instead of taking car to mechanic shop, you can use it to check the trouble code and show code definition by yourself.
- Sturdy and Compact: Equipped with a 2.5 foot cable made of very thick, flexible insulation. It is important to have a sturdy scanner as it can easily fall to the ground when working in a car. The AD310 OBD2 scanner is a well-constructed mechanic tool with a sleek design. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. Thanks to its compact design and light weight, transporting the device is not a problem. The buttons are clearly labelled and the screen is large and displays results clearly.
- Accurate Fast and Easy to Use: The AD310 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble codes in seconds. If you want to find out the cause of the check engine light, this device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle.
- OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. This is not the case with the AD310 scanner as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This device also has extensive vehicle compatibility with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Check compatibility with your vehicle model before purchasing.
- Home Necessity and Worthy to Own: This is an excellent code reader to travel or home with as it weighs less and it is compact in design. You can easily slide it in your backpack as you head to the garage, or put it on the dashboard, this will be a great fit for you. The AD310 is not only portable, but also accurate and fast in performance. Moreover, it covers various car brands and is suitable for people who just need a code reader to check their car.
Autel MaxiCheck MX808 OBD2 Scanner: 2023 Full Bidirectional Diagnostic Scan Tool Same as MaxiCOM MK808S MK808, Active Test as MP808, 28+ Service, All Systems, Injector Coding, ABS Bleed, FCA AutoAuth
$449.00 out of stock
Amazon.com
as of May 24, 2025 11:06 am
Features
- 【2024 NEWER OF MK808S MK808Z, SAME AS MK808BT PRO/ MK808Z-BT/ MK808K-BT】Good News! Autel has upgraded MX808 to the 2024 MX808S. With the same cost, you are experiencing 5X faster diagnostics and wider 150+ car brands coverage from 1996-2024. Function as MK808BT PRO, the pro-level MX808S enjoys powerful ROCKCHIP RK3566, improved OS 11, larger 4+64GB, and new added 3K+ Bidirectional, FCA Autoauth & Renault SGW. ✅Superior to MK808S, MX808S supports 3 default languages without IP Restriction.
- 【2024 NEWLY RELEASED 3000+ ACTIVE TEST/ FULL BI-DIRECTIONAL CONTROL】As more cost-effective ver. of Autel MX900/ MK900 (619$)/ MK808BT PRO (519$), 2024 newest MX808S (449$) Bi-directional diagnostics scan tool also integrates 3000+ real active tests, saving you 70$-170$! It can send commands to the vehicle's ECU to drive a~ctuators to work, such as ABS, windows, doors, finding faulty issues in seconds. Pls send your VIN# to check compatibility first Autelchoice @ outlook. com.
- 【28+ SERVICES, SAME AS MK808BT/ MK808S/ MK808Z】As one of the most versatile diagnostic scanners, Autel MaxiCheck MX808S is the most ideal choice for repair shops & mechanics, which can solve 99% Factory-level 150+ Makes Maintenances, including ABS Bleed, Oil Reset, Injector Coding, EPB Reset, SAS, D~P.F Regeneration, Battery Registration, Throttle Reset, IMMO Keys (low-level Anti-theft), etc.Services do NOT work on all cars. Autelchoice @ outlook . com for compatibility.
- 【OE-LEVEL ALL SYSTEM DIAGNOSIS, WORTH EVERY PENNY】Autel MaxiCheck MX808S works well on 80+ car makes and models worldwide (1996 and newer), able to Read/ Clear codes, View Live Data, and retrieve ECUs information for all available systems (Engine, ABS, SRS, Trans, EPB, Chassis, Steering, TPMS, etc.) based on supported protocols. At the same time, the detailed diagnostic reports with possible fixes can reveal the exact nature of the problem to help you greatly plan the budget for repairs.
- 【AUTO VIN 2.0 & AUTO SCAN】MX808S auto diagnostic scan tool adopts 2024 Auto VIN 2.0 Technology with the latest VIN-base, which can identify your vehicle's Make, Model, and Year in seconds, 3X faster than competitors! What's more, with the Auto Scan function, MX808S can automatically scan all vehicle's ECUs at one touch to find out fault codes, more efficiently and accurately.NOTE: The feature of Auto VIN 2.0 does NOT work on all cars. But you can always navigate your vehicle manually.
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
$499.99 in stock
Amazon.com
as of May 24, 2025 11:06 am
Features
- 【Ultra Wide Compatibility with Construction Machinery】HD3600 heavy duty truck scanner is specially designed for the North American construction machinery market, fit for Caterpillar, Komatsu, John Deere, Volvo, Hitachi, Bobcat, Yanmar and Case. This diesel code reader handles standard and manufacturer-specific diesel OBD protocols like Caterpillar CDL. With extensive real-world testing, the HD3600 ensures strong compatibility and reliability, making it the ideal choice for 99% construction vehicles
- 【Powerful DPF Regeneration Function】Supports exclusive OEM-level DPF functions for Caterpillar, John Deere, Volvo, Komatsu, and Bobcat. This includes DPF reset, DPF forced regeneration, soot ratio reset, and ash ratio reset. If you are unsure of compatibility, you can provide the vehicle make/model/year and we will verify it for you
- 【Comprehensive Vehicle Diagnostics】HD3600 heavy equipment diagnostic tool supports reading vehicle information, reading and clearing standard and manufacturer-specific diagnostic trouble codes (DTCs), and reading live data streams. Ideal for Caterpillar, John Deere, Volvo, Komatsu, and Bobcat construction machineries, this scanner ensures efficient issue identification and resolution, optimizing performance and reducing downtime
- 【Advanced Diagnostic Tool】HD3600 heavy equipment scan tool supports both standard OBDII and diesel OBD protocols, including SAE J1939, J1708, J1850 PWM, J1850 VPW, ISO 14230-4, ISO 9141-2, ISO 15765-4, and ISO 27145-4. It covers the majority of commercial trucks in the North American market and offers full-system diagnostics
- 【Superior Tablet Features】HD3600 truck diagnostic scanner features a robust 5-inch tablet running on Android 5.1. It supports one-click activation, one-click voltage checking, one-click feedback, one-click screenshots, and report creation with print capability
JPRO Diagnostic Service Kit (NRS-263025-NS)
out of stock
Amazon.com
as of May 24, 2025 11:06 am
Features
| Part Number | 263025 |
BOSCH 3945 ADS 525x Professional Diagnostic Scan Tool with Wireless VCI - Extreme Flexibility | Extreme Speed | Extreme Access | Most Advanced OE Level Vehicle Coverage Available
in stock
Amazon.com
as of May 24, 2025 11:06 am
Features
- [EXTREME FLEXIBILITY] - 1st year software subscription with all-access coverage included free, plus a 30-day free trial of Enhanced subscription which includes full-system color wiring diagrams and Repair-Source on-tool OEM service / repair info library
- [EXTREME SPEED] - Ultra-fast, full system scans with Quick-Scan - perform all-systems DTC scans in under 60 seconds on average; complete scans take 30 seconds or less for many vehicles with pre/post scan reporting for all possible vehice systems
- [EXTREME ACCESS] - Fix the most vehicles, with coverage and information for Domestic, Asian, and European vehicles as far back as 1976, plus OEM approved to support secure access to unlock FCA Secure Gateway modules (SGW) found in late model vehicles
- [FREEDOM TO MOVE] - J2534-compliant wireless VCI gives you the freedom to move throughout the bay and stay connected to the vehicle
- [FUTURE PROOF PLATFORM] - All-new hardware and software technology, with Android 9 OS or higher, offers peak performance on an expandable, future-proof platform providing faster processing, more memory, and greater diagnostic process efficiency
XTOOL D9 Pro Diagnostic Scan Tool with 3 Years Updates, 2023 Newest, Module Topology, CAN FD & DoIP, 42+ Services, ECU Programming & Coding, Bi-Directional Control, All Systems Diagnostics
out of stock
Amazon.com
as of May 24, 2025 11:06 am
Features
- 【2024 NEWEST ULTIMATE DIAGNOSTIC TOOL FOR WORKSHOP】XTOOL D9 Pro scan tool features: Module Topology, ECU/ECM Programming, ECU Coding & Guided Functions for VAG vehicles, Flash Hidden Functions, Full Bi-Directional Controls, 42+ Services, Advanced Special Functions, OE All Systems Diagnostics, Export Live Data as CSV, CAN FD & DoIP, 3 Years Updates, Android 10 OS, Key Programming, ADAS, etc. NOTE: Come with VIN # via xtoolonline @ out look c om to check compatibility prior to purchase.(Android is a trademark of Google LLC)
- 【MODULE TOPOLOGY MAPPING TO BOOST REPAIR EFFICIENCY BY 65%】XTOOL D9 diagnostic scan tool features Module Topology to auto scan all available car modules to show color coded module status, reveal inter-communication structures between modules, dive right into the abnormal module and also related modules to boost repair efficiency by 65%. NOTE: Module Topology are not available to all makes. Check compatibility with VIN # first.
- 【ECU PROGRAMMING & ECU CODING】XTOOL D9 Pro ECU Programming & Coding tool can perform Online ECU Programming for VW, for BMW, for Mercedes Benz, Offline Programming for Ford, for Lincoln, for Mazda vehicles, to update ECU software/firmware, program new modules, and fix software-driven fault codes, and drivability issues; ECU coding for VW, for Audi, for Skoda, and etc to match, code the new ECU and customize car settings. NOTE: NOT available to all makes & modules for above mentioned brands.
- 【UNLOCK HIDDEN FUNCTIONS & V.A.G. GUIDED FUNCTIONS】XTOOL D9 Pro professional diagnostic tool comes with ECU Configurations to unlock hidden functions like unfolding rear-view mirror that previously un-foldable, disable annoying features like seatbelt alarming beep, maximum speed limiter, daytime running lights, auto start/stop feature and etc. It also comes with Guided Functions for V.A.G. vehicles to perform many functions with step-by-step on-screen instructions to boost efficiency.
- 【FULL BI-DIRECTIONAL CONTROLS】XTOOL D9 Pro Bi-Directional Scan Tool has full control over various car sub-systems, components like valves, solenoids, pumps, motors, to perform vehicle-specific active tests like E~V~A~P tests, injector tests, fuel pump test, cooling fan test, E-G-R test, compression test, abs motor pump test, window/door/sunroof/wiper/horn/lighting tests. NOTE: Active Tests available vary across vehicles. Come with VIN # to check compatibility prior to purchase.
The Video Review of Best diagnostic tool
The Verdict
When you’re looking for diagnostic tool, you’ll want to keep a few things in mind. First, decide what you want to use the diagnostic tool for. Next, check the product reviews with comparision which we have listed as well. Once you’ve decided on diagnostic tool you want to buy diagnostic tool, look at the reputation of the manufacturer as well. You can compare prices and quality together before you make your purchase.