Savvy car guy diagnosing his car's check engine light and car troubles with a BLCKTEC OBD2 scanner

Bigger screen. Faster fix.

Diagnose your car easily like a pro and save thousands

440 Advanced Handheld OBD2 Scanner

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Free shipping + 30-day free return


Quick scan, big savings

Instantly decode check engine light and save thousands with BLCKTEC 420 Handheld OBD2 scanner

From $xx9.99

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As Seen on

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5 star rated

“Saves time, money, and headaches. A true MUST HAVE for any car owner”

- Verified Customer

Meet your car-savvy best friend,
the OBD2 scanner

Piggy bank next to a dollar sign to indicate saving money

Save thousands

Find out how much repairs should cost to avoid rip-offs.

Car icon with heart above to indicate safe driving

Easy to use

No complex jargons or rocket science involved. Just plug and scan.

Thumbs up icon to indicate ease of use

Prevent breakdowns

Spot and fix problems before they occur down the road.

Shield icon with check symbol to indicate peace of mind

Drive stress-free

Experience the peace of mind that comes with knowing your car’s health.

BLCKTEC OBD2 scanners are nifty plug-in devices that translate your car’s mysterious check engine light codes into plain English, giving you advice on what might need attention.

Handheld OBD2 scanner from BLCKTEC

Uncover what car owners
cannot stop raving about

Love the live data

the scanner is definitely a step up from the ones we already had without live data . If you're already looking to get one, this is a good route to go.


Verified Buyer  

This saves so much time and money

When my car was acting strange, this device told me exactly what was wrong via my bluetooth when it sent a code.


Verified customer

Read your own codes and save on repairs

The shop said it would be a $1400 repair. I was able to make the requisite repairs for less than $300 in parts and a few hours labor.


Verified customer

good value for home diagnostics

I liked the ease of use of this unit. It is simple enough that a curious beginner can handle it.


Verified customer

Everyone should have one of these

if you get an annoying Check Engine Light, this costs less than one visit to a garage for diagnosis.

J. Holmgren

Verified customer

A necessity for all car owners

I am impressed with the results... It is fairly easy to use

Kevin R

Verified customer

check engine light

Check engine light on? Try BLCKTEC

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More reasons to choose BLCKTEC

Man's hand holding a smartphone, with the RS2 diagnostic app shown on screen

the right fix

Beyond code reading, our OBD2 scanners provide the largest verified fix database to help customers identify and fix the problem.

Man's hand holding BLCKTEC 420 OBD2 scanner inside a car

One scanner,
unlimited scans

Our scanners support unlimited vehicle scans and reports, as well as free firmware updates, saving you costs on future purchases

Reading and clearing car codes on a smartphone with Repair Solutions 2 app

Premium App

Get valuable insights from our top-rated RS2 app, including confirmed fixes, predicted repairs, and more. No subscription needed.

Customer support specialists talking on phone

Unrivaled US
Customer Support

We have local Americans on the line, ready to answer your questions in English or Spanish. All you need to do is pick up the phone.

American company

Proudly made.
Proudly USA

Unlike most competitors, BLCKTEC is a 100% American company, dedicated to providing quality products by Americans, for Americans.

Advanced Handheld OBD-II Scanner

440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
440 - Advanced Diagnostics
Shop for BLCKTEC 420 OBD2 scanner on now

Free shipping + 30-day free return

Features that empower you to go the extra mile

Fast Free Shipping

Get your scanner delivered in 3-5 days. Need it faster? Opt for expedited shipping at checkout.


Not 100% satisfied with our product? Not a problem. Let us know within 30-days of purchase for a full refund—no questions asked.

1-Year Warranty

Drive stress-free, knowing that your new scanner is protected by our free 1-year warranty.

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Smartphone screen displaying DTC codes found during a vehicle scan while using the RS2 app with freeze frame support

Get verified fixes from the highest-rated auto repair app in the US.

No subscription needed. EVER

Stay informed about recalls, TSB updates, predicted repairs, and more.


user downloads


check engine light

Trouble codes



Reviews worldwide



Verified fixes


5 star reviews

Five-star ratings


Get for iOS and Android

Apple App store
google play

*RepairSolutions2 App is ONLY available for download in USA and Canada Apple App Store and Google Play Store and it will NOT work in other countries.

BLCKTEC 440 handheld OBD2 scanner for troubleshooting car engine lights and engine codes

Stay ahead of car troubles


Free shipping + 30-day free return

Shop now on Amazon

Get started with 3 quick & easy steps

Plugging in the Bluetooth dongle into your car's OBD2 port

Step 1: Plug it in

Plug the scanner into your car’s OBD2 port, which is typically located beneath the dashboard, near the driver’s seat.

Turn the ignition to “ON” position. DO NOT start the engine

Step 2: Turn the key

Turn the ignition to “ON” position. DO NOT start the engine

Diagnosing check engine lights or car trouble codes

Step 3: Start scanning

Monitor your car’s vitals on the scanner and get ready to troubleshoot. Download the FREE RS2 app on your phone to access more features.

Call us!
We have Americans on the line, ready to help

BLCKTEC leads the field because we are a 100% US company. We provide unrivaled customer support, by Americans, for Americans

Besides US-based call support, we also have:

Live chat

24/7 Email support

Talk to one of our experts

English & Spanish available

Customer support specialists talking on phone
1996 icon_150ppi.png__PID:b79e290e-e234-4bce-94bb-c323780b0cfc

BLCKTEC scanner supports all OBD2-compliant cars which are vehicles sold and registered in the USA and Canada after 1996, including sedans, light trucks, SUVs, and hybrids vehicles.

RepairSolutions2 App is only available in the USA and Canada.

Mechanic holding clipboard talking to a car owner at a car repair shop

Stop Overpaying for Car Repairs

Be in the know and save on your next visit
to the mechanice

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Don't get fooled by mechanics,
find the true cost of repairs

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The BLCKTEC Difference

Our tools are designed for accuracy and ease, standing head and shoulders above the rest

Feature Other scanners
Subscription Fee Zero Subscription Fees Hidden Subscription Fees
Design  Users Friendly & Easy Set-up Clunky design, hard to use
Application Dedicated App with Regular Updates  Limited-feature app
Verified Fixes Provide Verified Fixes & Estimated Costs  No Guidance
Support US based ASE Certified Support  Limited or No support
Scans Unlimited Vehicle Scans  Limited Number of Scans