

🚗 Diagnose Like a Pro, Drive with Confidence!
The TOPDON AL400-A OBD2 Code Reader is a compact, professional-grade diagnostic tool offering over 10 essential OBD2 functions including check engine light analysis, smog emission tests, and sensor diagnostics. Compatible with most vehicles worldwide since the mid-90s, it features a 2.4-inch screen, multi-language support, and free lifetime software updates—empowering millennial managers to maintain their vehicles efficiently and confidently without recurring costs.





















| ASIN | B09RG376NY |
| Best Sellers Rank | 30,596 in Automotive ( See Top 100 in Automotive ) 242 in OBD-II Engine System Diagnostic Tools |
| Brand Name | TOPDON |
| Customer Reviews | 4.2 4.2 out of 5 stars (860) |
| Included Components | 1*AL400 OBD2 Scanner, 1*Quick Start Guide, 1*cable |
| Item Dimensions L x W x H | 14.4L x 7.5W x 2.4H centimetres |
| Item Type Name | OBD2 CODE READER |
| Item Weight | 7.8 Ounces |
| Manufacturer | TOPDON |
| Manufacturer Warranty Description | 1 year warranty and life long service |
| Native Resolution | 320x240 |
| Power Source | Corded Electric |
| Screen Size | 2.4 Inches |
| UPC | 810139302247 632111342177 |
B**3
A Great Code Reader, At A Great Price
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! 💰👍
J**S
Easy to use and store
Small, easy to use and store. An RAC mechanic used my one and was complimentary about it so seems to be decent.
F**S
Essential tool for the price
For the money I am not sure this can be beaten. It had a great looking screen that is really easy to use and will scan most cars with an OBDII port ie anything from 1996 pretty much onwards . There are a ton of data streams available on here that normally don’t come at this price point and it scanned my Pathfinder no problem at all. This is perfect for leaving in the glove box (which is what I do) and a code gets thrown up when your away from home. You can work out if it’s serious (usually not) and if needed clear it so you can carry on. Little things like having a torch (pictured) inside the connection making it easy to plug in mean Topdon have been doing a great job of attention to detail. If your buying a car this is a no brainer purchase when you turn up you can check what codes are coming up and what has been cleared before you arrived. In short these scanners are getting better and better and I really like this , it’s a permanent fixture in the car now.
P**L
Great quality & value for money
Great quality & value for money - I bought this as my car was developing warning light on the dash and this little device read the fault code and accurately told me what was wrong with it and made the conversation with garage easy - easy to connect to the car too
K**E
Decent functionality
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
T**Y
This is great for finding fault codes on any make of car
This is great for finding out fault codes on any make and model of car (providing it has diagnostics port which all modern cars have) it’s really easy to use with very good clear and simple to follow instructions and very minimal buttons it’s made well and is rechargeable too its great for finding out what’s faulty with you car before taking it to the garage for repair so you know exactly what to expect and that way your already one step ahead it also is a brilliant bit of kit if your buying used cars because you can take this with you to check the car for sale for any known faults on the cars computer so it could save you buying a complete money pit its a really great tool to have for car owner or buyer and I would strongly recommend buying one for the small price it could save you big in the longer term highly recommended
W**L
Didn’t work
Failed to read any codes from a 2011 Kia Picanto with warning lights.
N**S
Great basic scan tool
Great wee tool for putting engine light out on land Rover Discovery sport saved garage prices light gone and easy to use
C**N
As described
B**.
usato su fiat freemont perfettamente funzionante.
M**O
* Modelo similar en Amazon: https://amzn.to/3XHRxEK 🟢 PROS - Económico 🪙 - Reconocimiento automático de vehículo - Compatibilidad con la mayoría de marcas de coches - Viene con luz 💡led de ayuda a conexión - Es capaz de borrar errores ❌ - Muy completo 🔴 CONTRAS - No dispone de App 📲 8️⃣ VALORACIÓN La mayoría de mis compañeros de trabajo ya tienen su propio OBD2 para el diagnostico del coche. Había cogido uno mas económico, que se controlaba desde App, pero no tenía todas las funciones libres y sólo me permitía ver los fallos, pero para borrarlos necesitaba comprar la App 📲. Ahora cogí éste, que me permite hacer todo desde la consola y no necesito hacer otra compra para resetear los fallos ❌. No pude probar esta opción, ya que hasta ahora no tuve ningún error ✅. El dispositivo es cómodo y fácil de usar, sólo necesitas: 1 - Conectarlo al puerto OBD2 de tu vehículo 2 - Poner el contacto del coche 🚘 3 - Escanear La consola es intuitiva y fácil de manejar y viene con idioma predeterminado en inglés 🏴 , pero se puede cambiar a español 🇪🇸 No lleva pilas 🔋 ni batería 🪫, funciona nada mas conectarlo al puerto del coche y se alimenta con la batería del vehículo 🚗. El propio conector dispone de una luz💡led que te ayuda a conectarlo si no dispones de mucha iluminación. Muy útil. Una vez conectado, necesitas poner el contacto del vehículo 🚙 y ya te lo reconoce. Yo lo probé en el mío de 2017 y lo detectó rápido. Es un dispositivo muy útil, fácil de manejar y muy completo. Lo estuve mirando junto con un vecino que es mecánico 👨🔧 y le sorprendió la cantidad de configuraciones que traía disponibles para ser un dispositivo tan económico 🪙. 👍 MUY RECOMENDABLE ✳️ Espero que mi comentario ✍️ te haya podido servir de ayuda 😃
A**K
Didnt work with 2012 D-Max
M**O
Prodotto semplice da usare e funzionale . Legge codici errore e se possibile li resetta Consigliato
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