Home » Best Professional Automotive Diagnostic Scanner 2019 Reviews

Best Professional Automotive Diagnostic Scanner 2019 Reviews

Are you a professional mechanic or an auto shop owner and need an advanced automotive diagnostic scanner? Then, this post for you. As a professional mechanic, I have used lots of diagnostic scanners. Best Professional Automotive Diagnostic ScannerSo, it is not hard for me to create a list of the best professional automotive diagnostic scanner. I have found Autel scanners, and Launch scanners are the most reliable for professionals. And I have listed here the most popular automotive scanners according to their speed, accuracy, functionality and advanced features.

Related: Best OBD2 Scanner Reviews – Buyer’s Guide

If you’re a professional auto mechanic or a car repair shop owner, then you know how important it is to have a powerful and accurate diagnostic scanner. A good professional scanner should comprise of basic, advanced, and special features. It should also offer extensive vehicle coverage and be internet updateable in order to diagnose the most recent fixes.

Our Recommended Best Professional Automotive Diagnostic Scanner Comparison Chart

ImagesOBD2 ScannersWeightPrice Idea
Editor's ChoiceCheck PriceAutel Maxisys Elite Diagnostic Tool (Upgraded Version of MS908P Pro) with WiFi Bluetooth Full OBD2 Automotive Scanner with J2534 ECU Programming & 2 Years Free Update
Read Review
24.9 poundsHigh
Check PriceAutel Maxisys Pro MS908P Automotive Diagnostic Scanner With ECU Coding and J2534 Reprogramming (Same function as Maxisys Elite)
Read Review
22.8 poundsHigh
Check PriceLAUNCH X431 V+ Diagnostic Scan Tool (Upgraded Version of X431V) for Bi-Directional Control, Full Systems Diagnoses, 11 Reset Functions including SAS, DPF, BMS, TPMS, Key Programming, ECU Coding with 2
Read Review
17.64 poundsHigh
Check PriceAutel Maxisys MS908CV Heavy Duty Diagnostic Scan Tool With J-2534 ECU Programming,Bluetooth/Wifi Enabled & Wireless Connection
Read Review
21.4 poundsHigh
Check PriceAutel Maxisys MS906 Automotive Diagnostic Scanner Scan Tool Code Reader (Upgraded Version of DS708 and DS808) with OE-level Vehicle Coverage of Read/Erase Codes, Actuation Tests, Adaptations etc.
Read Review
22 poundsMedium
Check PriceFOXWELL NT644 Pro Automotive OBD2 Scanner Full System OBD II Code Reader Car Diagnostic Scan Tool for Oil Light Reset, ABS, SRS, EPB, BRT, SAS, DPF, TBA and TPMS with Full Set OBDI Adapters Kit
Read Review
4.41 poundsLow
Check PriceAutel Maxidas DS808 OBD2 Diagnostic Scanner More Advanced Scan Tool with Bi-directional Control Ability and Key Programming (Upgraded version of DS708 and same as MS906)
Read Review
1.74 poundsLow
Check PriceInnova Color Screen with Bluetooth 3160g Code Reader/Scan Tool with ABS, SRS, and Live Data for OBD2 Vehicles
Read Review
1.28 poundsLowest
Check PriceAutel MaxiCOM MK808 OBD2 Scanner Diagnostic Scan Tool with All System Diagnosis and Service Functions Including Oil Reset, EPB, BMS, SAS, DPF, TPMS Relearn (MD802+MaxiCheck Pro)
Read Review
5.75 poundsLow
Check PriceActron CP9690 Chrome Scan Tools
Read Review
4 poundsLowest

With so many professional scanners to choose from, it is crucial that you select a reliable, fast, and accurate scanner that will help you to diagnose a wide range of vehicles quickly and easily. We fully understand that finding the best automotive diagnostic scanner is not as easy as people’s needs vary, and so is their budget. So, brace yourself and read our entire review to find a scanner that will offer exceptional performance and meet your needs. These are as follows.

Most Popular 10 Best Professional Automotive Diagnostic Scanner 2019 Review

I have tested and researched about these automotive scan tools and most of them I have used personally. I fully understand that finding the best professional automotive diagnostic scanner is not as easy as people’s needs vary and so is their budget. So, brace yourself and read our entire review to find a scanner that meets your needs and budget. These scanners are as follows.

Autel Maxisys Elite Diagnostic Tool

The Autel Maxisys Elite diagnostic scan tool is an exceptional OE-level functionality diagnostic scanner. It has coding functions that allow you to program on particular control modules. The device also provides accurate diagnosis and analysis, making it suitable for car repair shop owners.

Read More – Autel Maxisys Elite Reviews: Diagnostic tool with ECU Programming

The Maxisys Elite has the ability to cover more than 80 car makes and models from the USA, Asia, and Europe. It is also simple to use due to its powerful and fast NVIDIA’s Tegra” 4 quad-core processor and large 9.7-inch retina display. Apart from coding, the gadget can as well be used to reset DPF, SAS, Tire pressure, and even perform anti-theft matching. If you are looking for the all-time best professional automotive diagnostic scanner, then buy this.

Technical Specifications of the Autel Maxisys Elite Scanner

Features Autel Maxisys Elite
Works: All 1996 & newer vehicles
Operating System(OS): Android 4.4.4 KitKat
Display: 9.7” Retina display with 2048X1536 resolution & Capacitive touch screen
Processor: NVIDIA Tegra 4 (4-PLUS-1 Quad-core Processor) 1.8GHz with ARM Cortex – A15 CPU
Memory: 2GB RAM & 32GB Embedded Memory
Camera: Rear: 8.0 Megapixel, Autofocus with Flashlight
Front: 2.0 Megapixel
Connectivity: 802.11a/b/g/n/ac WIFI
Version 2.1 3Mbs Bluetooth
RJ45 Ethernet Connection
3.0 USB (2.0 Compatible)
HDMI 1.4a
Audio Input/Output: Microphone
Dual Speakers
3-Band 3.5 mm stereo/standard headset jack
Models: More than 80 US domestic, Asian, European
Protocols: OBD1/OBD2
Check Engine Light(MIL): Yes
Reads, stores Data: Yes
Clears codes & resets monitors: Yes
Views freeze frame data: Yes
Real-Time push message notifications: Yes
Get Transmission codes: Yes
Software Update: Two years free update
Warranty: One year warranty
Price: Autel Maxisys Elite automotive diagnostic scannerCheck Today’s Price


  • Provides accurate diagnosis and analysis
  • Durable design with rubberized outer protection and a rugged internal housing
  • It is extremely fast as it features NVIDIA Tegra 4 1.8 GHz quad-core processor
  • Offers wireless connection
  • Offers extensive vehicle coverage as it covers more than 80 US, European, and Asian vehicle makes and models.
  • It is an advanced scan tool with the added feature of ECU coding and programming
  • Comes with 2 years of free software update


  • It is quite challenging to use as one has to figure out how to utilize the menus and functions on the device.

Autel Maxisys Pro MS908P Automotive Scanner

Autel is one of the top brands and is known for its exceptional and high-quality scan tools. The Autel Maxisys Pro MS908P diagnostic scanner is a great gadget for professional mechanics and technicians. It comes with advanced features and functions and it is slightly higher priced than most scan tools on the market. The MS908P operates on Android 4.0 with a large 9.7-inch color screen that displays all the results.

Read Full Review – Autel Maxisys Pro MS908P Reviews [Automotive diagnostic scanner]

The scanner has advanced functions like data logging, data manager, MaxiFix, and online programming. It is also very fast and precise when it comes to identifying vehicles to scan. Thanks to the Auto-Vin tech on the device. Other functions include extensive OE-level diagnosis, Anti-theft matching, DPF regeneration, reset procedures, and reading/erasing of check engine light.

Technical Specifications of the Autel Maxisys Pro MS908P automotive diagnostic scanner

Features Autel Maxisys Pro MS908P
Vehicle Coverage: More than 80 US, Asian and European Vehicle
Display: 8.0 inch LED capacitive touch screen with 1024x768P resolution
Operating System: Android
Processor: Samsung Exynos 6-Core Processor (1.3 GHz quad-core ARM Cortex-A7 + 1.7 GHz dual-core ARM Cortex-A15)
Internal Memory: 2 GB RAM and 32 GB ROM
Power-balance test & auto-scan: Yes
Oil Reset,EPB, ABS, SRS, DTCs, SAS Calibration, DPF: Yes
Check Engine Light: Yes
Camera: 8.0 Megapixel, AF with Flashlight
Displays live data in text: Yes
Views Freeze Frame data: Yes
Connectivity: Wi-Fi (802.11 b/g/n), DB16 DLC, USB 2.0, SD Card (Support up to 32GB)
ECU Information: Yes
Injector Coding: Yes
Real-time push message notifications: Yes
Update: One-year free update
Warranty: One Year Limited Warranty
Price: Autel Maxisys Pro MS908P Professional scannerCheck Today’s Price


  • It identifies vehicles fast and accurately with the AutoVin technology
  • Clear and large color screen for easy and quick interpretation
  • It has a wireless connection for use within the garage
  • The device features a camera and flashlights
  • It is durable as it comes with a string rubber housing for protecting the screen
  • It has an outstanding battery with an excellent runtime of 8 hours
  • Extensive vehicle coverage of more than 80 car makes and models


  • It is quite expensive
  • There have been complaints about it slowing down when connected to the internet
  • You will have to pay for updates after sometime

Launch X431 V+ Diagnostic Scan Tool

Launch X431 V+ diagnostic scanner is one of the best professional OBDII scan tools with outstanding features. Mechanics and professional technicians will find this scan tool to be great for their job. It covers 90% of Asian, European, and American vehicles. It also has wireless connectivity which makes it easy to use around the car garage and you don’t need to be inside the car to diagnose it. X431 is the most affordable best professional automotive diagnostic scanner.

Read more detail – Launch X431 Review: V+, PROS Mini & Viii(All 3 model Reviewed)

The Launch X431 V+ diagnostic scan tool offers multiple special reset functions such as SAS, EPB, TPMS, Oil reset, DPF regeneration, ETS, IMMO, Injector, ECU coding, and ABS bleeding.

Technical Specifications of the Launch X431 V+ scanner:

Features Launch X431 V+
Works: Over 68 car brands and 220 car models from America, Europe, Asia
Operating System: Android
View live data: Yes
Check Engine Light: Yes
Active Test: Yes
View freeze frame: Yes
Anti-theft Matching: Yes
Oil Reset, ABS, SRS, Body control module: Yes
Wifi, Bluetooth functionality: Yes
Software Update: Two years free update
Warranty: One year warranty
Price: Launch X431 V+ OBD2 Professional Automotive Diagnostic toolCheck Today’s Price


  • It comes with a built-in camera to record videos and send to tech support for help
  • It is very durable as it can resist grease and water
  • Launch X431 V+ features a large 10.1-inch color screen for easy
  • It provides a wireless connection with the help of Wi-Fi and Bluetooth connectivity
  • It has an anti-theft matching function
  • Extensive vehicle coverage of 90% of car models from Europe, America, and Asia


  • It has limited software updates of only 2 years
  • Launch X431 is very expensive and not suitable for the ordinary usrer(Perfect for professional mechanic).
  • It is not compatible with iOS devices

Autel Maxisys MS908CV Heavy Duty Scan Tool

The Autel MS908CV is an upgraded version of Autel Maxisys MS908. The Autel Maxisys MS908CV diagnostic scanner is a great tool for heavy-duty scanning. This is because the gadget comes with a complete diagnostic tool kit that features a compact sized MaxiFlash Elite which performs J2534 & J2534-2 pass-thru programming and as well as offers Bluetooth VCI communication between the car and the MaxiSys CV tablet. The MS908CV heavy duty diagnostic scanner also performs special functions like DPF regeneration, Maintenance resets, Injector quantity adjustment, calibrations, and adaptations.

Full Review – Autel MS908CV Review [Heavy Duty Diagnostic Scan Tool]

With vehicle coverage of more than 80 US, Asian, and European vehicles, this is a great code reader for professional mechanics and for use in large car repair shops.

Technical Specifications of the Autel Maxisys MS908CV

Features Autel Maxisys MS908CV
Works: 1996-present(more than 80 US, Asian and European vehicle)
Display: 9.7 inch LED capacitive touchscreen with 1024×768 resolution
Operating System: Android 4.0
Processor: Samsung Exynos Quad-Core Processor 1.4GHz
Memory: 2GB RAM and 32GB On-board Memory
Camera (rear): Rear-facing, 5.0 Megapixel, AF with Flashlight
EPB, Brake Bleeding, DPF & SCR, Immo & keys: Yes
Live data: Yes
Views freeze frame data: Yes
Connectivity: Ethernet: RJ45 Ethernet Connection, WiFi (802.11 a/b/g/n),
USB: 2.0, BT v.2.1 + EDR, SD Card (Support up to 32GB), HDMI
Oil Reset: Yes
Software Update: Free Online Update
Warranty: One year warranty
Price: Autel MS908CV heavy duty toolCheck Today’s Price


  • Performs advanced ECU coding
  • Has wireless connectivity through Bluetooth
  • It has a wide vehicle coverage of more than 80 US, Asian, and European vehicle makes
  • It is fast and accurate with the extraordinary Cortex-A9 quad-core processor
  • Autel MS908CV performs a wide range of special services which include SAS reset, Oil service reset, Anti-theft matching, etc.
  • It is suitable for heavy-duty vehicles as it performs a powerful diagnosis and analysis


  • It is quite expensive and ideal for large auto repair shops or busy professional mechanics

Autel Maxisys MS906 Best Professional Automotive Diagnostic Scanner

If you’re a professional mechanic with a garage or auto repair shop, then the Autel Maxisys MS906 car scanner is a great tool for you. This is an upgraded version of DS708 and DS808 with OE-level vehicle coverage. It is powered by a 5000 mAh lithium polymer battery with excellent run time. It also runs on 1.3 GHz quad-core processor which is fast.

Read More: Autel MS906 Review: Maxisys Automotive Diagnostic Scanner

The Autel MS906 has AutoVin technology which helps you to identify your vehicle quickly and carry out a fast diagnosis. Other functions include scanning ECUs, support full system, and special functions.

Technical Specifications of the Autel Maxisys MS906

Features Autel ms906
Display: 8” LED-backlit glossy Multi-Touch capacitive display(1024×768)
Operating System: Android 4.4.2
Oil Reset, ABS, SRS, EPB, SASS, DPF, TPMS: Yes
Check Engine Light: Yes
Internal Memory: 2 GB RAM & 32 GB ROM
Camera: Built-in 8-megapixel rear camera with autofocus and flashlight
Live data: Yes
Views freeze frame data: Yes
Active Test: Yes
Opens and closes electronic brake calipers: Yes
ECU coding, Injector coding: Yes
Audio Input/Output: Single Speaker, Microphone
Smart AutoVIN technology for identifying vehicles easily: Yes
Real-time push message notifications via internet: Yes
Vehicle Coverage: More than 80 US, Asian and European car
Update: One year free update
Warranty: One year limited warranty
Price: autel maxisys ms906 automotive diagnostic scannerCheck Today’s Price


  • It is very flexible as it provides a wireless connection
  • Offers extensive vehicle coverage
  • Easy to use with the large 8-inch color screen
  • Comes with an 8mp camera that is used to take photos and share with tech support
  • Extensive vehicle coverage of more than 80 car manufacturers
  • It supports full system as well as special functions


  • It has limited software updates of 1 year
  • It takes longer to be recharged

Foxwell NT644 Automotive OBD2 Scan Tool

Foxwell is another quality brand with top diagnostic code readers. The Foxwell NT644 Pro automotive scanner automatically scans all diagnosable electronic control modules on a vehicle, instantly showing all the issues detected on the vehicle. This car scanner not only detects the problems your car is facing but as well helps you to find possible dangers before they take place.

Related: Best Foxwell Scanner Reviews: 7 All-Time Popular List

The NT644 automotive scan tool stands out from the rest of the scanners as it is compatible with a wide range of vehicles and also performs a wide range of functions such as battery configuration, DPF, TPMS, ABS, throttle body, SAS, EPB, etc.

Technical Specifications of the Foxwell NT644 Pro Diagnostic Scan Tool

Features Foxwell NT644
Compatibility: OBDI/OBDII
Works: All 1987-1996 and later vehicles
Display: 4.3″ color display
Graph and analog for easy data review: Yes
Oil Service Reset: Supports 48 car makes
Check Engine light: Yes
I/M monitor readiness test: Yes
View Freeze Frame Data: Yes
Display Live Data in Text: Yes
DPF Regeneration: Supports 36 car makes
Battery Replacement: Supports 24 car makes
Injector: Supports 34 car makes
Electronic Parking Brake EPB: Supports 42 car makes
Software Update: Lifetime free updates
Warranty: One year warranty
Price: foxwell nt644 professional diagnostic systemCheck Today’s Price


  • It is very easy to use with clear LCD screen and hotkeys
  • It covers most 1996 US-based, 2000 EU-based, and newer vehicles
  • Performs a wide range of functions
  • It is compact and portable
  • Foxwell NT644 is compatible with both OBD1 and OBD2 systems
  • It comes with lifetime free updates
  • The manufacturer provides a one-year warranty


  • Poor support from Foxwell
  • It has compatibility problems

Autel Maxidas DS808 OBD2 Diagnostic Scan Tool

Professional technicians looking for a reliable and user-friendly scan tool, the Autel Maxidas DS808 will be a great option for them. This fast and compact device is very easy to use but offers a wide range of functions. It is a nice mid-range car scanner that will do everything that you can possibly want in a car garage. Some of the functions that it performs include add key fobs, retrieve ECU information, support oil reset, reset transmission CVIs, enable a quick relearn, etc. It is the best professional automotive diagnostic scanner for the money.

Read more – Autel DS808 Reviews (Upgraded Version of DS708)

The Autel Maxidas DS808 scab tool is also easy to navigate and use due to its user-friendly 7-inch LCD touchscreen. With extensive vehicle coverage of more than 80 US, European, and Asian vehicles, this is a nice scanner for mechanics and DIYers.

Technical Specifications of the Autel Maxidas DS808

Features Maxidas DS808
Operating System: Android 4.4.4
Display: 7-inch LCD capacitive touchscreen with 1024×600 resolution
Processor: Cortex-A9 processor (1.5 GHz)
Memory: 32GB
Audio Input/Output: Input: N/A, Output: buzzer
Connectivity: Mini USB 2.0, USB 2.0, Wi-Fi, Micro SD card
Battery Charging Input: 5 V/1.5 A
Tested Battery Life: Around 4.5 hours of continuous use
Oil Reset, ABS, SRS, TPMS, EPB, SAS, DPF, BMS Resets: Yes
Injector coding: Yes
Reset Transmission CVIs: Yes
View live data: Yes
Update Option: Free online update
Vehicle Coverage: More than 80 U.S., Asian and European vehicle
Warranty: 12-month warranty
Price: Autel Maxidas DS808 Diagnostic Scan ToolCheck Today’s Price


  • It is very convenient to use with Bluetooth wireless connection
  • The device is user-friendly and very easy to navigate
  • It covers a wide range of vehicles
  • Performs a wide range of functions
  • Easy to read 7-inch LCD touchscreen
  • There are free online updates
  • Comes with a 12-month warranty


  • The instructions provided are not very clear
  • It doesn’t support OBD1 vehicles

Innova 3160g Code Reader with Bluetooth

Innova 3160g is a wonderful professional scan tool with outstanding and powerful features and functions. The device is equipped with a user-friendly interface that makes setting up and diagnosing a vehicle to be easy and fast.

Read more – Innova 3160g Review: Comparison 3160, 3160e & 3160g Scan tool

In addition, it can read and clear check engine lights on any foreign or domestic 1996 and newer OBD2 compliant car, SUV, light truck, and hybrids. Moreover, this gadget comes with Bluetooth connectivity that allows for wireless use. With the free internet updates provided, your tool will have the most current information and technology.

Technical Features of the Innova 3160g

Features Innova 3160g
Display: 3.5″ LCD Screen
Check Engine Light: Yes
Live Data: Yes
Brake (ABS) Codes: Yes
Emissions Readiness: Yes
Repair Solutions: Yes
Airbag (SRS) Codes: Yes
Oil / Battery Reset: Yes
Batteries: 3 AA batteries required. (included)
Live Data Graphing: Yes
Service Light Reset: Yes
LED Lighted Connector: Yes
Software Update Option: Free update via online
Warranty: One year warranty
Price: Innova 3160gCheck Today’s Price


  • It supports multiple languages
  • It can be used as a standalone scab tool with its Bluetooth
  • Innova 3160g comes with free internet updates
  • It has the ability to read and clear ABS and SRS codes
  • It comes with an LED lighted connected that makes connecting it in the dark easy


  • It only provides the error code and not with the details
  • It needs to run on 3 AA batteries that get depleted very fast

Autel MaxiCom MK808 OBD2 Diagnostic Scan Tool

This is another exceptional scanner from Autel and it is great for professional mechanics that are looking for a quality device at a great price. This scan tool has a 7-inch touchscreen for displaying info and makes the interpretation to be easy. It is also fast with its quad-core processor.

Read More – Autel Maxicom MK808 Reviews

The Autel MaxiCom MK808 diagnostic scanner performs a wide range of functions such as oil reset, basic TPMS service, SAS, EPB, DPF, BMS and efficient maintenance of systems. If you are looking for the best professional automotive diagnostic scanner at cheap price, then this scan tool for you. It also has free updates for one year and a one-year warranty.

Technical Specifications of the Autel MaxiCOM MK808 Scanner

Features Autel MaxiCOM MK808
Works: All 1996 US-based, 2000 EU-based and newer vehicles
Operating System: Android
Display: 7″ LCD Touchscreen
Processor: Cortex-A9 processor (1.5 GHz)
Views freeze frame data: Yes
Check Engine Light: Yes
Oil Reset: Yes
Live data: Yes
Reading/Clearing codes: Yes
Get Transmission codes: Yes
Batteries: 1 Lithium Polymer batteries required.(included)
Update option: 12-month free updates
Warranty: One year warranty
Price: Autel Maxicom MK808Check Today’s Price


  • Navigating with this tool is very easy
  • It has the ability to show sensor IDs from the ECU of a vehicle
  • Autel MK808 supports a wide range of functions
  • It is compatible with a wide range of vehicles
  • It is user-friendly with its sensitive touchscreen and fast quad-core processor
  • Comes with a one-year of free internet updates
  • Has a one-year warranty


  • It doesn’t have coding
  • The gadget is a bit slow when it comes to scanning

Actron CP9690 Chrome Scan Tool

The Actron CP9690 chrome automotive diagnostic scanner is a powerful and compact device that performs most of the basic and a few advanced functions. This scanner is ideal for less experienced professional mechanics who want to advance to the next level. It is easy to use and the large LCD color screen clearly displays all the information recorded.

Read More – Actron cp9690 Review: Trilingual OBD I/OBD II Elite Autoscanner Pro

The device is compatible with OBD 1, CAN, and OBD 2 vehicles. You can use it to perform an oil reset, battery reset, clear and erase error codes and much more.

Technical Specifications of the Actron cp9690 elite autoscanner

Features Actron CP9690
Works: All 1996 and later vehicles
Display: Easy to read color LCD screen
Support: OBD I, OBD II
Powertrain and ABS Vehicle coverage: Yes
Check Engine Light: Yes
Views freeze frame data: Yes
Record, playback and graph live engine data: Yes
Code Connect: Yes
Oil light and battery reset: Yes
Update option: Yes (Via internet)
Battery system monitor: Yes
Warranty: 12 month warranty
Price: Actron cp9690Check Today’s Price


  • Large color screen for easy interpretation of results
  • It is compatible with most 1996 and newer import and domestic vehicles
  • CP9690 also works with OBD 1 vehicles
  • It can record, playback, and graph live engine data
  • Has CodeConnect function that allows you to find solutions to different car problems
  • It can perform battery system monitor
  • You can use it to reset oil light and battery


  • It only covers vehicles that are manufactured up to 2013 and not beyond
  • it requires 2 AAA batteries to operate

Finding the best scan tool for your job or task is very important. This is because a scan tool that is great for one person may be not for another. Therefore, make the right choice and get a scan tool with the features and functions that you want. Hope you’ve found this best professional automotive diagnostic scanner to be informative.


Question: Which top scan tool brands should I consider buying from?
Answer: There are lots of automotive diagnostic scanner brands out there but not all of them are to be trusted. Some of the re-known and highly recommended scanner brands are Innova, Autel, Launch, Foxwell, Ancel, and some few others.

Question: What is an ECU?
Answer: ECU in full means engine control unit and it is sometimes referred to as engine control module. The ECU is a type of electronic control unit that controls a series of actuators on an internal combustion engine to ensure optimal performance. It performs this by reading values from a multitude of sensors within the engine bay, interpreting the information utilizing multidimensional performance maps and changing the engine actuators as needed.

Question: What do I have to do if the light goes out before performing a car diagnosis?
Answer: In this scenario, you should do nothing at all. This is because it is possible that the issue that caused the light to come on has been tackled and the OBD computer turned it off. It is also not an indication of a bad OBD system. When such a situation occurs, there is a high chance that a loose gas cap was tightened or a fouled spark plug was cleared.

Still, have a question after reading this best professional automotive diagnostic scanner? Comment below.


  1. Autel Elite J2534 is a good model to do key programming.
    Launch X431 V is not bad if you want a full bidirectional scan tool.


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