Deliver toUnited Arab Emirates
TOPDON AL400-A OBD2 Code Reader, 10 OBD2 Functions, Check Engine Light/Smog Emission Test / O2 Sensor Test/EVAP, Free Lifetime Update

Description:

  • 10+ OBD2 FUNCTIONS: this scanner provides all OBD2 functions for vehicles compatible with OBD/EOBD/CAN (Controller Area Network) protocol. The most commonly used OBD features include reading and erasing DTCs, I/M readiness, graphic data stream, freeze frame, O2 sensor test, on-board monitor test, EVAP test, and vehicle information
  • ONE-CLICK SMOG CHECKER: I/M readiness button checks the exhaust fumes to help automobiles pass emissions tests with one click
  • FREE SOFTWARE UPDATE: this code reader can be upgraded for free, simply connect the device to a computer and install the updates through TOPDON's website. Scanners with similar features usually require yearly subscriptions
  • EASY TO USE: plug the connector into the 16-pin DLC, turn on the ignition, and the scanner will automatically connect to the vehicle, displaying the main menu for easy navigation
  • MULTI-LANGUAGE: both the menu and DTC definitions are available in 7 languages English, French, German, Italian, Spanish, Portuguese, Japanese.
  • WIDE COMPATIBILITY: this OBD2 code reader works on most US-based cars since 1996, EU-based cars after 2000, and Asian-based cars after 2008. Our hotline provides 24-hour technical support for prompt problem resolution at support@topdon.com

  • Reviews:

    5.0 out of 5 stars Easy to ues

    J. · 10 June 2025

    (function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Great item just what I wanted and at a good price

    5.0 out of 5 stars Good bit of kit

    D.O. · 25 June 2025

    Easy to operate, sturdy. Already paid for itself by saving me a garage diagnostic visit.

    4.0 out of 5 stars Works on a Merc

    h.b. · 26 June 2025

    Works fine on my 2006 Mercedes CLK 220 for picking up the fault and clearing it and the EMS warning light. Based on the fault code returned I traced the issue to a subtly split turbo hose.Many of the other features do not seem to work on this particular vehicle but it did what I bought it for so all good.

    5.0 out of 5 stars A Great Code Reader, At A Great Price

    b. · 4 May 2022

    TOPDON Code Reader AL400 is the upgrade version of AL200/AL300.This OBD2 scanner comes with variety of OBD2 functions, including reading & erasing DTCs/resetting monitors/live streaming in graphs/viewing freeze frame data, and many more features that would usually be found in an expensive diagnostic tool. Determine the cause of "Check Engine" lights/monitor the running components of the engine, and use freeze-frame technology to focus on a car's trouble area. I replaced a sensor on my Campervan and used this to delete the DTC. It’s really straight forward to use and you can even use it in the dark due to the light built into the OBD plug. Comes with lifetime updates via a USB connection lead to connect to a computer so there’s no subscription to pay for which really appeals to me. This OBD2 reader is really easy to use, has loads of features, lifetime updates and a really great price! 💰👍

    1.0 out of 5 stars wouldnt pick up any codes

    P.A.W. · 17 May 2025

    bought this just over 12 months ago . and i have a abs warning light on the dash .but the scanner fails to pick up any codes grr.maybe im unlucky or been given the wrong one .but they are getting very good reviews .i know have have a scanner which is of no use to me and out of warranty

    5.0 out of 5 stars Not for diagnosing.

    F.P. · 9 June 2022

    Considering the price, a really good and fairly basic device. Bear in mind it is not strictly a diagnostic tool. It's a trouble code reader, eraser and "live" data viewer.Easy to update by visiting Topdon website and downloading the latest firmware April 2022 is the one that was available at the time of writing this. My Win 10 did disply a warning about downloading the update tool.Long, flexible cable and useful l.e.d. light incorporated into the plug. My car's OBD port is buried deep under the dash! No reference in the instructions about replacing the battery for the light. Probably a button cell and accessible by removing the small screws on the plug?Edited to add that there are two CR1220 cells in the plug. Without encouraging anyone to replace them, when necessary, they are easy to access with care. Doing so will probably invalidate any warranty though.Recommended for slightly more than very basic use.

    3.0 out of 5 stars Decent functionality

    k.c. · 7 November 2024

    If you know how to use it, good. I used it didn't know how to fix it, so had to return it.KNOW HOW TO FIX, NO POINT JUST BUYING

    5.0 out of 5 stars Good item at much lower cost than other brands.

    C.r. · 22 April 2025

    Really good code reader. Did have to add my car via the USB cable but no big issue.

    Muy buena calidad precio

    A. · 1 June 2025

    (function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Genial para leer y borrar códigos de error del sistema de gases ya sea egr caudalímetro turbo dpf

    As described

    C.d. · 7 July 2024

    As described

    Veloce e semplice

    M.f. · 25 November 2023

    Prodotto semplice da usare e funzionale .Legge codici errore e se possibile li resettaConsigliato

    Imcomplet

    J. · 17 February 2023

    Cet appareil ne supporte pas les marques Peugeot, Renault et quelques autres.Il est impossible de se connecter au site du fabriquant pour exécuter les mises à jour.

    Isuzu not supported

    A.S. · 23 May 2024

    Didnt work with 2012 D-Max

    TOPDON AL400-A OBD2 Code Reader, 10 OBD2 Functions, Check Engine Light/Smog Emission Test / O2 Sensor Test/EVAP, Free Lifetime Update

    Product ID: KO09ET376AL
    Condition: New

    4.2

    AED33505

    Price includes VAT & Import Duties
    Style Name: AL400
    Availability: In Stock

    Quantity:

    |

    Order today to get by 7-14 business days

    This item qualifies for free delivery

    Returns & Warranty policies

    Imported From: United Kingdom

    At BOLO, we work hard to ensure the products you receive are new, genuine, and sourced from reputable suppliers.

    BOLO is not an authorized or official retailer for most brands, nor are we affiliated with manufacturers unless specifically stated on a product page. Instead, we source verified sellers, authorized distributors or directly from the manufacturer.

    Each product undergoes thorough inspection and verification at our consolidation and fulfilment centers to ensure it meets our strict authenticity and quality standards before being shipped and delivered to you.

    If you ever have concerns regarding the authenticity of a product purchased from us, please contact Bolo Support. We will review your inquiry promptly and, if necessary, provide documentation verifying authenticity or offer a suitable resolution.

    Your trust is our top priority, and we are committed to maintaining transparency and integrity in every transaction.

    All product information, images, descriptions, and reviews originate from the manufacturer or from trusted sellers overseas. BOLO is not affiliated with, endorsed by, or an authorized retailer for most brands listed on our website unless stated otherwise.

    While we strive to display accurate information, variations in packaging, labeling, instructions, or formulation may occasionally occur due to regional differences or supplier updates. For detailed or manufacturer-specific information, please contact the brand directly or reach out to BOLO Support for assistance.

    Unless otherwise stated, all prices displayed on the product page include applicable taxes and import duties.

    BOLO operates in accordance with the laws and regulations of United Arab Emirates. Any items found to be restricted or prohibited for sale within the UAE will be cancelled prior to shipment. We take proactive measures to ensure that only products permitted for sale in United Arab Emirates are listed on our website.

    All items are shipped by air, and any products classified as “Dangerous Goods (DG)” under IATA regulations will be removed from the order and cancelled.

    All orders are processed manually, and we make every effort to process them promptly once confirmed. Products cancelled due to the above reasons will be permanently removed from listings across the website.

    Similar suggestions by Bolo

    More from this brand

    Similar items from “OBD-II Engine System Diagnostic Tools”

    TOPDON AL400-A OBD2 Code Reader, 10 OBD2 Functions, Check Engine Light/Smog Emission Test / O2 Sensor Test/EVAP, Free Lifetime Update

    Product ID: KO09ET376AL
    Condition: New

    4.2

    TOPDON AL400-A OBD2 Code Reader, 10 OBD2 Functions, Check Engine Light/Smog Emission Test / O2 Sensor Test/EVAP, Free Lifetime Update-0
    Style Name: AL400

    AED33505

    Price includes VAT & Import Duties
    Availability: In Stock

    Quantity:

    |

    Order today to get by 7-14 business days

    This item qualifies for free delivery

    Returns & Warranty policies

    Imported From: United Kingdom

    At BOLO, we work hard to ensure the products you receive are new, genuine, and sourced from reputable suppliers.

    BOLO is not an authorized or official retailer for most brands, nor are we affiliated with manufacturers unless specifically stated on a product page. Instead, we source verified sellers, authorized distributors or directly from the manufacturer.

    Each product undergoes thorough inspection and verification at our consolidation and fulfilment centers to ensure it meets our strict authenticity and quality standards before being shipped and delivered to you.

    If you ever have concerns regarding the authenticity of a product purchased from us, please contact Bolo Support. We will review your inquiry promptly and, if necessary, provide documentation verifying authenticity or offer a suitable resolution.

    Your trust is our top priority, and we are committed to maintaining transparency and integrity in every transaction.

    All product information, images, descriptions, and reviews originate from the manufacturer or from trusted sellers overseas. BOLO is not affiliated with, endorsed by, or an authorized retailer for most brands listed on our website unless stated otherwise.

    While we strive to display accurate information, variations in packaging, labeling, instructions, or formulation may occasionally occur due to regional differences or supplier updates. For detailed or manufacturer-specific information, please contact the brand directly or reach out to BOLO Support for assistance.

    Unless otherwise stated, all prices displayed on the product page include applicable taxes and import duties.

    BOLO operates in accordance with the laws and regulations of United Arab Emirates. Any items found to be restricted or prohibited for sale within the UAE will be cancelled prior to shipment. We take proactive measures to ensure that only products permitted for sale in United Arab Emirates are listed on our website.

    All items are shipped by air, and any products classified as “Dangerous Goods (DG)” under IATA regulations will be removed from the order and cancelled.

    All orders are processed manually, and we make every effort to process them promptly once confirmed. Products cancelled due to the above reasons will be permanently removed from listings across the website.

    Description:

  • 10+ OBD2 FUNCTIONS: this scanner provides all OBD2 functions for vehicles compatible with OBD/EOBD/CAN (Controller Area Network) protocol. The most commonly used OBD features include reading and erasing DTCs, I/M readiness, graphic data stream, freeze frame, O2 sensor test, on-board monitor test, EVAP test, and vehicle information
  • ONE-CLICK SMOG CHECKER: I/M readiness button checks the exhaust fumes to help automobiles pass emissions tests with one click
  • FREE SOFTWARE UPDATE: this code reader can be upgraded for free, simply connect the device to a computer and install the updates through TOPDON's website. Scanners with similar features usually require yearly subscriptions
  • EASY TO USE: plug the connector into the 16-pin DLC, turn on the ignition, and the scanner will automatically connect to the vehicle, displaying the main menu for easy navigation
  • MULTI-LANGUAGE: both the menu and DTC definitions are available in 7 languages English, French, German, Italian, Spanish, Portuguese, Japanese.
  • WIDE COMPATIBILITY: this OBD2 code reader works on most US-based cars since 1996, EU-based cars after 2000, and Asian-based cars after 2008. Our hotline provides 24-hour technical support for prompt problem resolution at support@topdon.com

  • Reviews:

    5.0 out of 5 stars Easy to ues

    J. · 10 June 2025

    (function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Great item just what I wanted and at a good price

    5.0 out of 5 stars Good bit of kit

    D.O. · 25 June 2025

    Easy to operate, sturdy. Already paid for itself by saving me a garage diagnostic visit.

    4.0 out of 5 stars Works on a Merc

    h.b. · 26 June 2025

    Works fine on my 2006 Mercedes CLK 220 for picking up the fault and clearing it and the EMS warning light. Based on the fault code returned I traced the issue to a subtly split turbo hose.Many of the other features do not seem to work on this particular vehicle but it did what I bought it for so all good.

    5.0 out of 5 stars A Great Code Reader, At A Great Price

    b. · 4 May 2022

    TOPDON Code Reader AL400 is the upgrade version of AL200/AL300.This OBD2 scanner comes with variety of OBD2 functions, including reading & erasing DTCs/resetting monitors/live streaming in graphs/viewing freeze frame data, and many more features that would usually be found in an expensive diagnostic tool. Determine the cause of "Check Engine" lights/monitor the running components of the engine, and use freeze-frame technology to focus on a car's trouble area. I replaced a sensor on my Campervan and used this to delete the DTC. It’s really straight forward to use and you can even use it in the dark due to the light built into the OBD plug. Comes with lifetime updates via a USB connection lead to connect to a computer so there’s no subscription to pay for which really appeals to me. This OBD2 reader is really easy to use, has loads of features, lifetime updates and a really great price! 💰👍

    1.0 out of 5 stars wouldnt pick up any codes

    P.A.W. · 17 May 2025

    bought this just over 12 months ago . and i have a abs warning light on the dash .but the scanner fails to pick up any codes grr.maybe im unlucky or been given the wrong one .but they are getting very good reviews .i know have have a scanner which is of no use to me and out of warranty

    5.0 out of 5 stars Not for diagnosing.

    F.P. · 9 June 2022

    Considering the price, a really good and fairly basic device. Bear in mind it is not strictly a diagnostic tool. It's a trouble code reader, eraser and "live" data viewer.Easy to update by visiting Topdon website and downloading the latest firmware April 2022 is the one that was available at the time of writing this. My Win 10 did disply a warning about downloading the update tool.Long, flexible cable and useful l.e.d. light incorporated into the plug. My car's OBD port is buried deep under the dash! No reference in the instructions about replacing the battery for the light. Probably a button cell and accessible by removing the small screws on the plug?Edited to add that there are two CR1220 cells in the plug. Without encouraging anyone to replace them, when necessary, they are easy to access with care. Doing so will probably invalidate any warranty though.Recommended for slightly more than very basic use.

    3.0 out of 5 stars Decent functionality

    k.c. · 7 November 2024

    If you know how to use it, good. I used it didn't know how to fix it, so had to return it.KNOW HOW TO FIX, NO POINT JUST BUYING

    5.0 out of 5 stars Good item at much lower cost than other brands.

    C.r. · 22 April 2025

    Really good code reader. Did have to add my car via the USB cable but no big issue.

    Muy buena calidad precio

    A. · 1 June 2025

    (function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Genial para leer y borrar códigos de error del sistema de gases ya sea egr caudalímetro turbo dpf

    As described

    C.d. · 7 July 2024

    As described

    Veloce e semplice

    M.f. · 25 November 2023

    Prodotto semplice da usare e funzionale .Legge codici errore e se possibile li resettaConsigliato

    Imcomplet

    J. · 17 February 2023

    Cet appareil ne supporte pas les marques Peugeot, Renault et quelques autres.Il est impossible de se connecter au site du fabriquant pour exécuter les mises à jour.

    Isuzu not supported

    A.S. · 23 May 2024

    Didnt work with 2012 D-Max

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