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The Best Diag Box of 2022 – Reviewed and Top Rated

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

2,843 Reviews Scanned

SaleRank No. #1
GODIAG GT100 Breakout Box OBDII Protocol Detector ECU Bench Connector OBD Diagnostic Port Tester
  • 【LED Indicator】GT100 LED will indicate whether the OBDII Diagnostic interface has a good communication with the car. Easy to use, no need for a computer in order to work, save time and money.
  • 【Check ALL OBD2 Diagnostic Socket Pins】Can be used on all types of cars
  • 【Power Check】GT100 ECU Bench connector Able to power the car when replacing the used battery. Power check, Ground check and Earth check
  • 【Connect Multiple ECU Control Modules】Can connect multiple ECU control modules at the same time, which is convenient for the professional engineers to detect and maintain.
  • 【Additional Extension Cables for FREE】The space of the diagnostic interface location is too narrow to connect to the diagnostic tool, or the user find that the diagnostic cable is not long enough during maintenance. It can be extended by 1.2 meters. 
Rank No. #2
Godiag GT100+ OBDII Breakout Box, Advanced OBD and CAN Protocol Detector for ECU Bench Testing and Car Diagnostics
  • 【ECU Bench Tool】 GT100+ allows you to power an ECU on the bench; you can easily do diagnostics, vehicle immobilizer, and security work, whether it is on the bench with the included power adapter, or in the vehicle with the OBDII port supplied power.
  • 【Added CAN BUS and K-LINE Protocol】GT100+ not only check all obd2 diagnostic socket pins, but also non-standard OBD2 protocols, like the port 1,9,3,11,12,13,and 8. It can test CAN BUS and K-LINE protocol.
  • 【Help You Verify Communication, Power, Grounds】Before connecting to your costly scan tools, you can use GT100+ to verify the networks are communicating properly, or there is proper power and grounds being supplier to the box assembly. In the case you do not have a proper power or ground, it might burn your expensive scan tools.
  • 【Easy Operation With Banana Plug & Current Display】Compared with similar tools, GT100+ OBDII Breakout box features with simple operation and additional features for doing ECM, ECU repair on vehicles. GT100+ breakout box connects with ECU module via banana plug or DB25 connector, not only providing power to ECU,but also directly displaying electronic current value. You can easily judge whether your cable has connected correctly or the ECU module is in good condition.
  • 【Power ECU when Replacing Battery 】The auxiliary power supply aims at supplying power to the vehicle through GT100+ OBDII Breakout Box before replacing the battery to sustain the power supply to the vehicle.
Rank No. #3
  • Genuine Oem: Yes, Category 2: Electrical, Fitment Footnotes: Diag Ref #1, Item Name: Fuse Box, Category 1: Electrical
  • Brand: GM, Fitment Type: Direct Replacement, W/Tow Pkg: W/tow Pkg, Part Ref# On Diagram: ONLY PART REFERENCE #1 ON THE DIAGRAM IS
  • Manufacturer Part Number: 22933347, Category 3: Fuse & Relay, Alternate Item Name: Fuse Box, Quantity Needed: 1
Rank No. #4
OBD2 Breakout Box & OBDII Protocol Detector for Power/Grounds Detector 4mm Banana sockets CAN Breakout Box with Male/Female Header OBD2 Diagnostic Connector Detector for All OBDII Vehicle
  • 【Multifunctional OBD2 Breakout Box】OBDII breakout box is used for the OBDII diagnostic link connector. After connecting the car diagnostic tester and the car OBDII system, the communication protocol,power and grounds of the OBDII on-board diagnostic system can be monitored very simply and safely,which is a multifunctional OBD2 diagnostic connector detector.It can be directly connected to the car's on-board data link and easily access the vehicle's data bus line.
  • 【OBD2 Diagnostic Tool Supporting Multiple Protocol Types Testing】OBD2 breakout box is powerful,besides diagnosing car signals (such as power/grounding,judging whether car OBD signal reception is normal, etc.), it can also detect some diesel signals, such as supporting CAN bus, K line, L line and PWM protocol testing, supporting multiple types.
  • 【OBD Signal&Grounds&Power Detection】OBD2 breakout box can judge the OBD signal reception.When the decoder communicates with the vehicle,if the yellow light is on for a long time,it indicates that the decoder is communicating with the vehicle,and there is a signal waveform at pin 2 or 6/7/10/14/15.It can also diagnose whether the power and grounds are normal.When the body ground is normal,the green LED of pins 4 and 5 is on.When the body power supply is normal,the red LED of pin 16 is on.
  • 【16 pins OBDII Interface&90cm Cable】OBD interface of the detector adopts a 16 pins design,the input jack layout fully emulates the 16-pin layout of the OBDⅡ interface,allowing more tests to be performed quickly and intuitively,you can have quick access to all 16 pin connections during vehicle service and diagnostics.You do not need to directly operate the pins of the OBDII interface.The cable length of the OBDII data line detector is 90 cm,which makes the device connection more convenient.
  • 【16 Standard 4MM Banana Sockets & Male/Female Header Connectors】The built-in input jack can be connected to any type of 4mm banana plug for easy connection to a multimeter or oscilloscope to further measure the uncertain monitoring signal.In addition,OBD2 protocol detector has male and female header connectors,you can place the junction box between the diagnostic tool and the vehicle,which is more convenient to measure the CAN bus signal.
SaleRank No. #5
Teva mens Teva Men s Hurricane XLT2 Sport Sandal Black 9 Medium US, Black, US
  • Quick-dry webbing made from recycled plastic using traceable, verifiable REPREVE polyester yarn by Unifi supports your foot and stands up to abuse
  • Injection-molded strap ends for quick and easy grip and adjustability, Easy hook-and-loop closure comes on and off quickly and gets the fit just right
  • Robust EVA footbed for enhanced comfort built for all-day wear
  • Nylon shank stabilizes and supports your foot on uneven terrain
  • Best for: day hikes, light hikes
SaleRank No. #6
Diagnostic and Statistical Manual Mental Disorders
  • unknown author (Author)
  • English (Publication Language)
  • 01/01/1963 (Publication Date) - American Psychiatric Association (Publisher)
Rank No. #7
TOPDON TopScan OBD2 Scanner Bluetooth, Wireless OBDII All System Diagnostic Tool for iOS & Android, Bidirectional Scan, Check Engine Car Code Reader, Vehicle Performance Test, Repair Guides, AutoVin
  • 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.
  • 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.
  • 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. TopScan Lite provides one year of free software updates.
  • Performance Testing: Always Know Your Vehicle's Condition, TopScan Lite supports speed performance testing, allowing you to analyze speed changes and calculate engine displacement efficiency,the higher the VE volumetric efficiency, the better the power output performance of the engine.
  • 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.
Rank No. #8
KAWISH OBD2 Breakout Box Auto OBDII Protocol Detector 16-Pin CAN Bus Test Breakout Box with LCD Display for OBDII Protocol Communication Detection/ECU Tool
  • 【Auto OBD2 Breakout Box】 This is an Breakout Box OBDII Protocol Detector for the car OBDII diagnostic link connector, which provides easy access to the OBDII connector so that after connecting the automotive OBDII system, the different color LEDs on the OBD2 junction box can monitor the protocol, power and ground signals conveniently and safely, good helps detect if the problem is with the vehicle's ECU or decoder.
  • 【LED flashing of OBDII Breakout Box】 LEDs provide a quick indication of OBDII Protocol Detect power or ground issues. When the code reader is communicating with the vehicle, the yellow LED (pin 2/6/7/10/14/15) lights up with a signal waveform. If a normal car ground is detected, the green LED (pin 4/5) will be on solid. If it is detected that the car power supply is normal, the red LED (Pin16) will be always on.
  • 【Digital display and 16-pin interface design】 Auto 16 pin dlc breakout box an LED display design is added to first eliminate the voltage problem of the OBD port and easily determine whether the cable and the car OBD port are connected correctly. The port is designed with a 16-pin interface, when the OBD2 scanner communicates with the vehicle, it can easily connect all 16 pins of the OBDII junction box for more tests quickly and intuitively.
  • 【4mm banana plug & 128cm extension cord】 The OTC Can test box has a safety banana socket that accepts all types of 4mm banana plugs. You can connect a multimeter or oscilloscope to the banana socket to detect the detailed signal information of the corresponding lit port. The cable length of the obd ii breakout testing box is 128cm, which makes device connection more convenient and you don't have to operate in a narrow space in the car.
  • 【Strong safety performance】 This Auto ECU Breakout Box can prevent the power supply from being reversed, and the KW308 will sound an alarm when reversed connection occurs. It can protect the diagnostic tool from damage such as power short circuit. The product comes with a small flashlight to help plug the OBD port into the car when the light is low. (Do not jumper pins together without understanding the circuits. )
Rank No. #9
GODIAG GT100 Automotive Tools OBD II Breakout Box ECU Connector with OBD Main Line & Multi-Function Jumper for Check Engine, Support LED Indicator and Lookup
  • 【𝗟𝗶𝘁 𝗨𝗽 𝗗𝗮𝘀𝗵𝗯𝗼𝗮𝗿𝗱】Sometimes, we always worry about the lost car keys. Use the GT100 to short-circuit banana plug connector to lit up the dashboard. In addition, you can also connect with some test platform (e.g. : CASA) to pragram keys.
  • 【𝗘𝗖𝗨 𝗕𝗲𝗻𝗰𝗵 𝗧𝗼𝗼𝗹】 GT100 allows you to power an ECU on the bench; you can easily do diagnostics, vehicle immobilizer, and key programming, whether it is on the bench with the included power adapter, or in the vehicle with the OBDII port supplied power.
  • 【𝟭𝟲 𝗣𝗶𝗻𝘀 𝗗𝗲𝘀𝗶𝗴𝗻 & 𝟭.𝟮𝗺 𝗘𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻 𝗖𝗮𝗯𝗹𝗲】The input jack layout of OBD2 protocol detector fully simulates the 16-pin layout of the OBDII interface,allowing more tests to be performed quickly and intuitively. When the OBD2 scanner communicates with vehicles, all 16 pins of OBDII breakout box can be easily connected. OBD2 breakout box has female connector and male connector with a 1.2m extension cable.
  • 【𝗣𝗼𝘄𝗲𝗿 𝘁𝗵𝗲 𝗘𝗖𝗨 】Through GT100+ OBDII Breakout Box before replacing the battery to sustain the power supply to the vehicle, which will ensure that the car has fully power to prevent data loss and audio lock-up or the malfunction due to lack of power to the ECU control module.
  • 【𝗠𝘂𝗹𝘁𝗶𝗽𝗹𝗲 𝗘𝗖𝗨 𝗠𝗼𝗱𝘂𝗹𝗲𝘀】The GODIAG GT100 can not only be connected to a single ECU module for single-module diagnosis and programming, but is also capable of connecting multiple ECU control modules at the same time. You can connect the ECU with the color jumpers. (If the ECU is CAN protocol, please check whether you will need to connect a 120 ohm resistor.)
Rank No. #10
GODIAG Key Fob Programming Tool Book for All Vehicles, Key Tool Plus Practical Instruction 1&2 Two Books for Vehicle Maintenance Engineer
  • 【Why You Need This Book?】The book KEY TOOL PLUS Practical Instruction covers the introduction of KEY TOOL PLUS tablet, car IMMO knowledge, and Anti-theft ECU data interpretation, makes it a perfect chioce for Auto Shop/ DIY User/Garage/Mechanic.
  • 【A Great Match for KEY TOOL PLUS】KEY TOOL PLUS is a comprehensive and full-featured device and it provides an all-in-one security solution for engineer. It is much easier to complete automotive programming anywhere via KEY TOOL PLUS and you do NOT need to take your laptop or even your mobile phone.
  • 【Car Key Programmer Tool】The book is not only a instruction of KEY TOOL PLUS, it is also a Car Key Programmer book, which teaches you to Add a key/ new key programming, All keys replaced, Read keys from IMMO memory.
  • 【Real Experience】The book also includes the frontline engineer's real car key matching operation process and their summarized precautions. KEY TOOL PLUS Practical Instruction provides technical guidance for engineers who need to do IMMO matching and help them avoid operational errors.
  • 【Great Gift】The key fob programming tool book is the practical gift for men or women. A beautiful bookmark is included with the book, bringing you a sophisticated reading experience. It can be a precious gift for your friend, teacher, student, DIY enthusiasts.

Last update on 2023-11-29 / Affiliate links / Images from Amazon Product Advertising API

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This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

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