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5 Best Diagnostic Test Tools of 2025

Last Updated - 2025/09/14

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

FOXWELL

FOXWELL OBD2 Scanner NT604 Elite Car Scanner ABS SRS Transmission, Check Engine Code Readers for Vehicles, Diagnostic Scan Tool with SRS Airbag Scanner, Battery Test

FOXWELL

CA$239.99

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Main highlights
- 【🌍 FOXWELL Climate Commitment】 FOXWELL believes true innovation goes beyond diagnostics-it supports sustainability. Certified Climate Friendly, the NT604 Elite vehicle code reader proves that precision technology and environmental responsibility can go hand in hand. 🍀 Every scan is a step toward a greener future.
- 【Smart AUTOVIN & Wide Coverage】 Save time with the AutoVIN feature, which instantly retrieves your vehicle's VIN and details-no need to type it in manually. Supporting 60+ car makes across America, Europe, and Asia, this scanner comes with lifetime f-ree software updates and never charges hidden fees.
- 【Ready to Use – 2025 New Release】 The FOXWELL NT604 Elite obd2 scanner is the latest 2025 version, designed for everyday car owners who want answers before heading to the shop. It scans the four most common systems-Engine, ABS, SRS, and Transmission - to quickly identify issues. Preloaded with the newest software, it works straight out of the box. No downloads, no delays.
- 【Protective Case Included + Lifetime Updates】 Unlike many scanners in this price range that come in flimsy plastic bags, the NT604 Elite car code reader arrives with a rugged protective case, shielding your tool from bumps and drops. Plus, you’ll enjoy lifetime free updates to keep your scanner current with the latest vehicles.
- 【Affordable & Reliable Car Health Check】 Stop guessing when dashboard lights pop up. Instead of costly trips to the dealer, the NT604 Elite code reader performs a complete scan to pinpoint the root cause, helping you fix problems faster and clear the warning light afterward. Reminder: Airbag crash/collision data can NOT be cleared even you replace the new airbag.
- 【5-in-1 Diagnostic Scanner】 More than a basic OBD2 code reader, the NT604 Elite car scanner also works as an ABS, SRS, Transmission, and Check Engine scanner. Check I/M readiness before your annual emissions test, view live data streams, access the built-in DTC library, and save or print reports with ease. Note: Does not support maintenance services.
CA$239.99
2
20% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

ANCEL
20% Off

ANCEL DS100 OBD2 Scanner - ABS, SRS, Transmission & Check Engine Code Reader with 7 Reset, Oil/Brake/BMS/SAS/ETS Reset, ABS Auto Bleeding, Gear Learning, Lifetime Free Update, Online Customer Service

ANCEL

CA$239.99

CA$299.99
(20% Off)

More Details
Main highlights
- [User-Friendly Design] - Featuring a bright, high-resolution 5” color touchscreen with intuitive icons, navigating through menus is a breeze - even in low-light garages. Supports over 100 car brands and offers interface options in 20 languages, making it accessible worldwide for DIYers and professionals alike
- [Smart AutoVIN Technology] - Automatically detects your vehicle’s make, model, and year, eliminating manual entry errors and speeding up the diagnostic process. Supports multiple brands and models, making it perfect for technicians working on a variety of vehicles - boosting efficiency and versatility
- [Shareable Diagnostic Reports] - Generate clear, easy-to-understand PDF reports including trouble codes, freeze frame snapshots, and live sensor data. These actionable reports help technicians diagnose issues 50% faster and provide customers with transparent service documentation - cutting unnecessary diagnostic time by 30% or more
- [Full OBD2 Modes for Total Vehicle Health] - Quickly read and clear trouble codes, monitor real-time engine performance, check I/M readiness, view freeze frame data, test o-xygen sensors, run onboard monitors, retrieve vehicle info, test components and modules, and perform E-VAP system checks. Plug-and-play setup makes it easy - no mechanic needed for routine diagnostics
- [Comprehensive 4-System Diagnostics] - Get in-depth scans of your vehicle’s Engine, Transmission, ABS, and Airbag (SRS) systems. Leveraging enhanced OBD-II technology and live data streaming, it identifies common faults like misfires, rough shifting, ABS sensor issues, and airbag warning lights. This scanner provides fast, reliable diagnostics so you can repair problems promptly. Note: Airbag crash data is permanent and cannot be cleared per safety regulations
- [All-Round Upgraded Support] - Compared to regular email communication, DS100 incorporates a fast and efficient online chat window design. One click connects you to online support, automated responses for simple inquiries and live agents for complex concerns. Stay updated continuously without any charges, ensuring users benefit from expanded vehicle support and an enhanced experience through regular updates
- [2025 New Special] - Beyond the basic four-system diagnostics, we’ve included 7 essential maintenance functions, such as ABS Auto Bleeding, Battery Matching, Brake Pad Reset, Electronic Throttle Adaptation, Gear Learning, Oil Reset, and Steering Angle Reset. It's the easiest way to check and understand your vehicle like an expert mechanic. NOTE: Some vehicles only support manual ABS bleeding. If you're unsure about compatibility, please feel free to contact us
CA$239.99
CA$299.99 (20% Off)
3
20% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

ANCEL
20% Off

ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Tool (Black)

ANCEL

CA$39.99

CA$50.00
(20% Off)

More Details
Main highlights
- 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 device 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.
- OBDII Protocols and Car Compatibility: Many cheap devices 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.
- 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.
- Accurate Fast & 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.
CA$39.99
CA$50.00 (20% Off)
4
Best Value
40% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

MOTOPOWER
40% Off

MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow

MOTOPOWER

CA$29.99

CA$49.99
(40% Off)

More Details
Main highlights
- Wide Capability - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 6 languages - English,German, Dutch, Spanish, French, Italian.
- Screen Protecting Film - There’s a transparent screen protecting film on the screen surface. If any scratches on the film, just tear off the screen protecting film. If any more problem on the screen, just contact our customer service for replacement directly.
- Multi-Functions - Practical Multi-Functions OBD2 code reader features built-in OBD2 DTC lookup library, which help you to determine the cause of the engine light, read code, erase code, view freeze frame, I/M ready, vehicle information, data flow, real-time curve, get vehicle speed information, calculate load value, engine coolant temperature, get engine speed.
- Connection Guide - Plug the scanner into the OBDII port on your car, turn on the ignition and then press the OK button to make the connection. To view the live data, please start the engine. If connection failure, please contact motopower directly for assistance.
- Compact Design - Car diagnostic scanner is equipped with a 2.5 feet long cable and made of a very thick flexible insulator.There are 6 buttons on OBD2 Scanner:scroll up/down,enter/exit and buttons that quick query VIN vehicle number& the DTC fault code.
- ABS / Airbag codes NOT Supported - It is able to read and clear check engine information which is part of OBDII system, but it cannot work with non-OBDII systems, including ABS / Airbag / Oil Service Light, etc.
- 2.8" LCD Display - Designed with a clear display 2.8" Large LCD screen - 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.
CA$29.99
CA$49.99 (40% Off)
5

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

TOPDON

TOPDON TopScan OBD2 Scanner Bluetooth, Bi-Directional Scanner Wireless All System Diagnostic Tool for iOS & Android, 8+ Hot Reset, Repair Guides, Check Engine Car Code Reader, Performance Test

TOPDON

CA$89.99

More Details
Main highlights
- Vehicle Coverage Lookup: Are you unsure whether the TopScan Lite scanner tool is compatible with your family's or friends' car models? We've got you covered! With the convenient TopScan Lite scanner compatible vehicle model table query function, you can easily verify compatibility with a single click. No more guesswork or uncertainty, get the answer Immediately.
- Subscription Fees: Topscan has two subscription options, choose the one that suits you best (quarterly/yearly), Topscan no subscription fees for the first year. If you don't subscribe for the second year, you can continue to use the I/M, Vehicle Performance, VE Calculation, Repair Library functions.
- More Personalization, Wide Car Compatibility: The 4-in-1 Data Stream function offers multiple display modes (graphs, numbers, dials) for easier data reading and comparison. One-click online upgrades ensure you always have the latest features. TopScan Lite diagnostic tool supports 100+ car brands and covers 10,000+ vehicle models. If you have any problems, please reach out to us at Support@Topdon.com and can also call us directly: US phone service 833-956-8335, Mon-Fri 9:00Am-18:00Pm Eastern time.
- Extensive Coverage, Seamless Access: Topscan provides comprehensive protocol support. It is compatible with FCA gateway unlock, Renault gateway unlock, and Nissan gateway unlock, allowing you to perform full diagnostics on these vehicles without restrictions. (Note: Gateway unlock access requires your own account). It also supports the CAN-FD protocol, making it compatible with more latest models for seamless diagnostics.
- Bluetooth Quick Pairing in Seconds: With the upgraded 5.0 Bluetooth system, TopScan Lite ensures a faster connection, eliminating the hassle of wires.The bluetooth pairing process needs to be completed in the application (IOS: TOPGURU&Android: TopScan). you can download our app from APP Store and Google play. (Tips: Cannot support 32-bit cell phones}
- Bi-directional Control, Quickly Locate Problems: The bi-directional scan tool enables you to send commands from your smartphone directly to the vehicle's ECU for active testing. This feature helps to quickly narrow down problem areas, such as A/C clutch, windows, doors, sunroof, etc., reducing the mechanic's diagnostic time and can help DIY users locate faults more easily. Additionally, TopScan Lite provides fault analysis and repair guidance, helping you solve problems efficiently.
- 8+ Popular Functions, Full System Diagnosis: TopScan Lite supports OBD2 full system diagnosis functions, including read/clear codes, ECU information,AUTO VIN, viewing real-time data, and active tests. It offers 8+ reset functions: Oil Reset, Throttle Adaptation, EPB Reset, Steering Angle Reset, DPF Regeneration, ABS Bleeding, BMS Reset, and Airbag Reset. By these functions, you can save on unnecessary repair costs and reduce repair times significantly.
- 4- Repair Guides, Your Online Assistant: TopScan Lite has launched 4 functions that are most touching for all car owners, DIY enthusiasts, and mechanics: TSB factory technical bulletins, easier and more convenient search. The OBD common fault code repair guidance, leading you to solve problems quickly. DLC diagnostic seat location, quickly positioning. Fault code database, telling you the reasons and solutions for all fault lights, saying goodbye to complicated methods.
CA$89.99

5 Best Diagnostic Test Tools of 2025

FOXWELL OBD2 Scanner NT604 Elite Car Scanner ABS SRS Transmission, Check Engine Code Readers for Vehicles, Diagnostic Scan Tool with SRS Airbag Scanner, Battery Test

ANCEL DS100 OBD2 Scanner - ABS, SRS, Transmission & Check Engine Code Reader with 7 Reset, Oil/Brake/BMS/SAS/ETS Reset, ABS Auto Bleeding, Gear Learning, Lifetime Free Update, Online Customer Service

ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Tool (Black)

MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow

TOPDON TopScan OBD2 Scanner Bluetooth, Bi-Directional Scanner Wireless All System Diagnostic Tool for iOS & Android, 8+ Hot Reset, Repair Guides, Check Engine Car Code Reader, Performance Test

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BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android - No Subscription Fee - OBD2 Car Scanner and Code Reader - Diagnose Check Engine, ABS, SRS, Airbag & 7000+ Issues on Vehicles 1996+

LAUNCH CR319 OBD2 Scanner 2025 Enhanced Universal Code Reader, Engine Fault Check /O2 Sensor/EVAP Test with DTC Lookup, CAN Diagnostic Scan Tool with Full OBD II Functions for All Vehicles Since 1996

OBD2 Scanner TOPDON ArtiDiag600S V2.0, Scan Tool with 9 Reset Service, Upgrade of AD500S/AD600S, Code Reader for ABS/SRS/Engine/Trans, FCA AutoAuth, Lifetime Free Update, Auto VIN, Battery Test, CANFD

2025 NEW TOPDON AD500 OBD2 Scanner, Oil/SAS/Throttle/TPMS/BMS/EPB Reset, Engine/ABS/SRS/Transmission Diagnostic Scan Tool, AutoVIN, Car Check Engine Code Reader with Battery Test, Lifetime Free Update

ANCEL AD530 Professional OBD2 Scanner Code Reader for Vehicle with Battery Test Engine Check Scan Live Data Car Diagnostic Tool All-in-One OBD 2 Function and Graphing Battery Status (Upgraded AD310)

ANCEL AD410 Enhanced OBD2 Scanner, Vehicle Code Reader for Check Engine Light, Automotive OBD II Scanner Fault Diagnosis, OBDII Scan Tool for All OBDII Cars 1996+, Black/Yellow

OBD2 Scanner Ease Setup Plug-Play: Clear Reset Engine Error Code Professional Code Reader Diagnostic Scan Tools with Freeze Frame/I/M Readiness for All Cars Since 1996 & Newer -LK11

MOTOPOWER MP69040 Car OBD2 Scanner Check Engine Fault Code Reader Diagnostic Scan Tool, Black

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