Skip to main content
HalloweenPetLawn & GardenTruck & AutomotiveSporting GoodsHorseFarm & RanchClothingLivestockPet & Animal PharmacyToolsPoultryFencing & GatesHome ImprovementOutdoor LivingHeating & CoolingHome Decor & FurnitureOutdoor Power EquipmentTrailers & TowingBoots & ShoesWild Birds & WildlifeToysGift CardsServices Propane RefillTrailer RentalGarden CenterFeed CenterSame Day DeliveryPetVet ClinicPet WashGrooming at PetsenseDog Training at PetsenseTractor Supply RxPet InsuranceWag!

"Savings and Offers"

Weekly AdSaleClearance

"More Options"

Weekly AdWhat's NewTractor Supply AppEarn Rewards with Neighbor's ClubHometown HeroesLife Out Here BlogTSC Exclusive BrandsTop BrandsClearance ItemsBattery FinderOutdoor Power Equipment Parts FinderHitch Finder

Spend $49.99 to unlock Free Delivery on most orders

|
Learn More
Order statusTSC Credit CardsWhat’s newPetsenseWeekly Ad
​
Sign In / EnrollGet rewarded!
​
Halloween
Pet
Lawn & Garden
Truck & Automotive
Sporting Goods
Horse
Farm & Ranch
Clothing
Livestock
Pet & Animal Pharmacy
Tools
Poultry
Fencing & Gates
Home Improvement
Outdoor Living
Heating & Cooling
Menu

Search

Home

Sign In

Cart
5.0
(1)
5.0 out of 5 stars. 1 review
A woman outside with a dog
A woman outside with a dog
  1. Home
  2. /
  3. Truck & Automotive
  4. /
  5. Garage & Shop Equipment
  6. /
  7. Automotive Tools & Shop Equipment
  8. /
  9. Automotive Diagnostic Tools
  10. /
  11. Code Readers & Scan Tools
  12. /

  13. TOPDON Code Reader - 2.4 in. Screen & Data Graphing

  1. Home
  2. /
  4. /
  5. Code Readers & Scan Tools

TOPDON Code Reader - 2.4 in. Screen & Data Graphing

Shop all TOPDON

  • Limited Time Deal

TOPDON Code Reader - 2.4 in. Screen & Data Graphing

Item # 259126699

TOPDON TOPDON Code Reader - 2.4 in. Screen & Data Graphing
TOPDON TOPDON Code Reader - 2.4 in. Screen & Data Graphing
$44.99

Sale

$49.99

Save$500(10%)

Spend $49.99 to unlock free delivery!

Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

Shop all TOPDON

  • Limited Time Deal

TOPDON Code Reader - 2.4 in. Screen & Data Graphing

Item # 259126699

TOPDON TOPDON Code Reader - 2.4 in. Screen & Data Graphing
TOPDON TOPDON Code Reader - 2.4 in. Screen & Data Graphing

$44.99

Sale

$49.99

Save$500(10%)

financeCard Logo
New Cardmembers earn a $20 Reward‡ with qualifying purchase of $20 or more plus earn 5% in Rewards+ on this purchase. Valid through 9/20/26.

Spend $49.99 to unlock free delivery!

This item is available online only

Delivery to

Free standard delivery on online footwear & Clothing purchases of $49 and over.

​
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

AL400 builds on basic code reading by adding live graphing, advanced diagnostics, and multilingual support, making it the ideal next-level handheld scan tool for DIYers and shop use. Great for beginners and techs alike.

For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.

  • Full OBDII diagnostics and live data support
  • Graphing display of real-time sensor values
  • Reads/clears DTCs and emission codes
  • Auto VIN detection + multilingual interface
  • Compact 2.4" backlit screen
  • Freeze frame and onboard monitor tests
  • Great for beginners and techs alike
  • Vehicle-powered-no internal battery
BrandTOPDON
Country of OriginImported
Battery Size12V
CompatibilityAll OBDII vehicles from 1996+
FeaturesAdvanced OBDII functions, full live data graphing, freeze frame, sensor data, multilingual interface, 2.4" LCD
Package Quantity1
Primary MaterialABS Plastic
Product Height0.96 in.
Product Length5.67 in.
Product Weight7.84 oz.
Product Width2.95 in.
Scan Tool TypeTools/Scanners/Code Readers
Warranty1 Year
Manufacturer Part NumberAL400
No questions have been asked about this product.

No questions have been asked about this product.

Q&As

No questions have been asked about this product.

No questions have been asked about this product.

Similar Items

  1. Innova Code Reader
    4.4 out of 5 stars with 24 reviews
    4.4 (24)

    Innova Code Reader

    $59.99
  2. TOPDON UltraDiag One-Year Update
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON UltraDiag One-Year Update

    $329.99
  3. TOPDON ArtiDiag Pro One-Year Update
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON ArtiDiag Pro One-Year Update

    $249.99
  4. TOPDON Bluetooth Scan Tool with Service Functions & CAN-FD
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON Bluetooth Scan Tool with Service Functions & CAN-FD

    $409.00
  5. TOPDON 8 in. Scan Tool Full System Diagnostics
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON 8 in. Scan Tool Full System Diagnostics

    $512.99
    Was $569.99Save $57.00
  6. TOPDON Artipad/Phoenix Pro One-Year Update
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON Artipad/Phoenix Pro One-Year Update

    $899.99
  7. TOPDON ArtiDiag 800 One-Year Update
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON ArtiDiag 800 One-Year Update

    $120.00
  8. TOPDON Pocket-Size Bluetooth Scan Tool with Bi-Directional Controls
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON Pocket-Size Bluetooth Scan Tool with Bi-Directional Controls

    $99.99
  9. TOPDON 8 in. Scan Tool & Key Programming with Bi-Directional Controls
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON 8 in. Scan Tool & Key Programming with Bi-Directional Controls

    $699.99
  10. TOPDON ArtiDiag 900BT One-Year Update
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON ArtiDiag 900BT One-Year Update

    $249.99
  11. TOPDON One-Year Software Update for Diagnostic Scan Tool
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON One-Year Software Update for Diagnostic Scan Tool

    $119.99
  12. TOPDON 7 in. Scan Tool with Service Functions & Bi-Directional Controls
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON 7 in. Scan Tool with Service Functions & Bi-Directional Controls

    $459.00

Items You May Like

  1. Innova CarScan Advisor OBD2 Scan Tool with Live Data, Battery/Charging System Test, Free Fix and Part Recommendations
    4.3 out of 5 stars with 30 reviews
    4.3 (30)

    Innova CarScan Advisor OBD2 Scan Tool with Live Data, Battery/Charging System Test, Free Fix and Part Recommendations

    $89.99
    Was $99.99Save $10.00
  2. Innova CarScan Inspector OBD2 Scan Tool with Oil Level and Oil Life, ABS and SRS, Free Fix and More
    4.6 out of 5 stars with 8 reviews
    4.6 (8)

    Innova CarScan Inspector OBD2 Scan Tool with Oil Level and Oil Life, ABS and SRS, Free Fix and More

    $116.99
    Was $149.99Save $33.00
  3. TOPDON 5 in. Scan Tool - PCM/TCM/ABS/SRS Lifetime Updates 9 Ser Func
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON 5 in. Scan Tool - PCM/TCM/ABS/SRS Lifetime Updates 9 Ser Func

    $207.89
    Was $230.99Save $23.10
  4. Innova CarScan Diagnostics OBD2 Scan Tool with All-System Network Scan, Maintenance Reset, Free Fix and More
    4.5 out of 5 stars with 15 reviews
    4.5 (15)

    Innova CarScan Diagnostics OBD2 Scan Tool with All-System Network Scan, Maintenance Reset, Free Fix and More

    $161.99
    Was $179.99Save $18.00
  5. GEARWRENCH Professional Bi-Directional Diagnostic Scan Tool
    4.0 out of 5 stars with 22 reviews
    4.0 (22)

    GEARWRENCH Professional Bi-Directional Diagnostic Scan Tool

    $149.99
  6. LitezAll Bigger Better Brighter Rechargeable Flashlight
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    LitezAll Bigger Better Brighter Rechargeable Flashlight

    $26.99
  7. Kodiak 18,000 Lm Kong Rechargeable Tactical Flashlight
    4.1 out of 5 stars with 7 reviews
    4.1 (7)

    Kodiak 18,000 Lm Kong Rechargeable Tactical Flashlight

    $89.99
  8. Surge 1,000 Lm Rechargeable Slim Light with Laser
    4.0 out of 5 stars with 4 reviews
    4.0 (4)

    Surge 1,000 Lm Rechargeable Slim Light with Laser

    $22.99
  9. TOPDON 4-Channel Osciliscope with Accessories works with Phoenix Tools
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON 4-Channel Osciliscope with Accessories works with Phoenix Tools

    $895.99
  10. GEARWRENCH 5in. Handheld Bi-Directional Diagnostic Tool
    4.5 out of 5 stars with 8 reviews
    4.5 (8)

    GEARWRENCH 5in. Handheld Bi-Directional Diagnostic Tool

    $449.99
  11. Eastwood 5 pc. Nylon Trim Removal Tools
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Eastwood 5 pc. Nylon Trim Removal Tools

    $14.99
  12. TOPDON 10.1 in. OE-Level Scan Tool, Cloud-Based Programming, CANFD
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON 10.1 in. OE-Level Scan Tool, Cloud-Based Programming, CANFD

    $1,619.99
    Was $1,799.99Save $180.00

Customers Also Bought

  1. TOPDON Diagnostic Scan Tool with Oil Reset and Throttle Adaptation Functions
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON Diagnostic Scan Tool with Oil Reset and Throttle Adaptation Functions

    $199.99
  2. TOPDON Phoenix Elite UPDATE Passenger Car-One Year
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON Phoenix Elite UPDATE Passenger Car-One Year

    $549.99
  3. Top Rated
    GEARWRENCH Automotive Pro True RMS Digital Multimeter
    5.0 out of 5 stars with 5 reviews
    5.0 (5)

    GEARWRENCH Automotive Pro True RMS Digital Multimeter

    $116.99
    Was $129.99Save $13.00
  4. Top Rated
    GEARWRENCH Universal Tire Pressure Monitoring System Programming and Diagnostic Tool
    4.9 out of 5 stars with 7 reviews
    4.9 (7)

    GEARWRENCH Universal Tire Pressure Monitoring System Programming and Diagnostic Tool

    $175.99
  5. GEARWRENCH Everyday Diagnostic Tool Bluetooth OBDII Tester
    4.3 out of 5 stars with 23 reviews
    4.3 (23)

    GEARWRENCH Everyday Diagnostic Tool Bluetooth OBDII Tester

    $69.99
  6. TOPDON 10.1 in. OE-Level Scan Tool, Cloud-Based Programming, Advance Protocols
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON 10.1 in. OE-Level Scan Tool, Cloud-Based Programming, Advance Protocols

    $2,300.99
  7. Top Rated
    GEARWRENCH Technicians True RMS Digital Multimeter
    4.9 out of 5 stars with 8 reviews
    4.9 (8)

    GEARWRENCH Technicians True RMS Digital Multimeter

    $80.99
    Was $89.99Save $9.00
  8. Prime-Line Telescoping Inspection Mirror, 2 in. Diameter, Extends 28 in.Es, 1 pk., W113006
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Telescoping Inspection Mirror, 2 in. Diameter, Extends 28 in.Es, 1 pk., W113006

    $11.99
  9. GEARWRENCH 7 in. Wireless Bi-Directional Diagnostic Tablet
    4.6 out of 5 stars with 18 reviews
    4.6 (18)

    GEARWRENCH 7 in. Wireless Bi-Directional Diagnostic Tablet

    $649.99
  10. Top Rated
    Innova Pro Automotive Digital Multimeter with Auto Specific Measurements, Protective Guards and Accessories
    4.8 out of 5 stars with 20 reviews
    4.8 (20)

    Innova Pro Automotive Digital Multimeter with Auto Specific Measurements, Protective Guards and Accessories

    $89.99
    Was $99.99Save $10.00
  11. TOPDON 8 in. OE-Level Scan Tool, Service Functions, Bi-Directional Controls, CANFD
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON 8 in. OE-Level Scan Tool, Service Functions, Bi-Directional Controls, CANFD

    $859.99
  12. TOPDON 13.3 in. OE-Level Scan Tool, Docking Station, Cloud-Based Programming
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TOPDON 13.3 in. OE-Level Scan Tool, Docking Station, Cloud-Based Programming

    $3,596.39
    Was $3,995.99Save $399.60

Reviews

Rating Snapshot

Select a row below to filter reviews.

5 starsstars

1
1 review with 5 stars.

4 starsstars

0
0 reviews with 4 stars.

3 starsstars

0
0 reviews with 3 stars.

2 starsstars

0
0 reviews with 2 stars.

1 starstars

0
0 reviews with 1 star.

Overall Rating

5.0

Review this Product

Select to rate the item with 1 star. This action will open submission form.
Select to rate the item with 2 stars. This action will open submission form.
Select to rate the item with 3 stars. This action will open submission form.
Select to rate the item with 4 stars. This action will open submission form.
Select to rate the item with 5 stars. This action will open submission form.
Adding a review will require a valid email for verification
1 to 0 of 1 Review .

1 Ratings-Only Review

Get the top deals, latest trends and more
Sign up for emails from Tractor Supply today.
First Name*
Last Name*
Email*

Customer Support

  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  

    (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

About Us

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

Work With Us

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

Neighbor's Club

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

Credit Center

  • TSC Credit Card

  • Klarna

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More
  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

  • TSC Credit Card

  • Klarna

Connect & Share with the Tractor Supply Community.

Shop on the go with the Tractor Supply App

Learn More
  • Privacy policy
  • Your Privacy Choices
  • Terms and Conditions
  • California Transparency Act
  • Legal Notices
  • Accessibility
  • Responsible Disclosure Statement
  • Surprise (Balance) Medical Billing Disclosure
  • Transparency in Coverage
  • Human Rights Policy
  • Vendor Code of Conduct
  • California Notice of Collection
  • Privacy Requests

© 2026, Tractor Supply Co. All Rights Reserved.