Top 5 Best Check Engine Code Readers
The check engine light doesn’t have to be a mystery. To find out why the check engine light is on, use a check engine code reader to retrieve the fault codes from the ECU. Look at your vehicle’s top 5 best check engine light code readers.
The YOUCANIC team has had the opportunity to test and review many check engine code readers, some of which you will find at Walmart, Advance Auto Parts, Harbour Freight, Amazon, and other online retailers.
Let’s look at what our experts found to be the best check engine code, reader.
🔧 Stop paying the dealer for every warning light
Get dealer level diagnostics at home with the YOUCANIC Full System Scanner.
- ✔ Works with all makes and models, including most luxury brands
- ✔ Topology map view shows all vehicle modules on one screen for faster diagnostics
- ✔ Bi directional controls to test fans, pumps, actuators and more so you do not have to guess
- ✔ Special resets and calibrations such as ABS bleed, EPB service, battery registration and more
- ✔ Free lifetime updates with no recurring fees
| Editor’s Pick | Scanner | Rating |
|---|---|---|
| Best Overall | YOUCANIC Scanner | 4.9 |
| Advanced Code Reader | Launch Creader VII+ | 4.9 |
| Code Reader for iPhone / Android | ELM 327 OBD-II Adapter | 4.8 |
| Budget Code Reader | TopDon ArtiLink 201 | 4.7 |
1. YOUCANIC FULL SYSTEM SCANNER
Here are some cons of other OBD-II scanners compared to the YOUCANIC Full System Scanner
- Many scanner manufacturers make scanners that require a yearly subscription.
- It can diagnose one make but doesn’t work on all car makes. You will have to pay more to cover other vehicle makes.
- I can’t diagnose all vehicle systems. May only diagnose the engine, airbag, transmission, and ABS problems. That’s only four systems. Modern cars can have up to 40+ systems.
- Don’t support bi-directional support for sensor testing and activation.
If you want a scanner that can do all these, you must spend thousands of dollars and most likely pay a yearly subscription.
So we decided to launch the YOUCANIC full system scanner that works on all makes and models.
The YOUCANIC full system scanner:
- Works on all makes.
- Can read and clear codes from all vehicle control units.
- View live data from any sensor.
- Bi-direction support to activate and test sensors and motors.
- Reset functions depending on the model.
If that is not enough, remember that the YOUCANIC scanner does not require a yearly subscription like other professional-level scanners. We believe that the YOUCANIC scanner offers the best OBD2 for the money for auto mechanics and DIYers.
We have many how-to videos showing you how to troubleshoot car problems. Once you get the codes, the YOUCANIC technicians can help.
2. Foxwell Check Engine Code Reader
The Foxwell NT301 check engine code reader is easy to use, can read and clear check engine light codes, and allows you to check emission readiness quickly. Foxwell NT301 is an excellent option if you are looking for a good check engine code reader. It is easy to use and works on most makes and models from 1996 to the present. In addition to being well built, it has a nice feature that allows you to check emission readiness status quickly. It is also an excellent choice for auto mechanics looking for a reliable scanner to keep as a backup.
Features
- Read / Clear Codes from the Engine Control Module
- View live sensor data
- Display emission readiness status
- Displays code definitions
3. Bluetooth Check Engine Code Reader
Any ELM327 OBD-II Bluetooth Scanner Adapter can be used to check engine code, but they must be paired with an iPhone or Android smartphone. Once you pair it with your smartphone, you can read and clear the check engine light codes directly from your phone. Pair it with your smartphone like you normally would on any Bluetooth device. Next, install any free OBD-II app from the app store. DashCommand for iPhone and Torque Lite App for Android are popular apps with free versions. It will allow you to read the check engine codes and display live sensor data such as engine temperature, air temperature, RPMs, fuel consumption, acceleration, etc.
Features
- Read / Clear Codes from the Engine Control Module
- View live sensor data from ECU
- Display fuel consumption data
- View emission readiness status
4. Innova Check Engine Code Reader
Innova makes many scanners, including the popular Innova 3040 Code Reader, which allows you to diagnose the check engine light and the ABS display live sensor data and reset service lights. This version is often sold at Advance Auto Parts and Autozone. Our favorite is the Innova 6100p scanner, which allows you to diagnose more systems, including engine, transmission, airbag, and ABS. It is a little more expensive than the Innova 3000 series models but worth the investment, considering that it pays for itself the first time you use it.
Featured Innova 6100p
- Read / Clear Codes from the Engine Control Unit
- Read / Clear Codes from the ABS module.
- Read / Clear Codes from the Airbag / SRS module.
- Reset / Clear Codes from the Transmission Module
- View live sensor data
- Check emission readiness status.
5. TopDon Check Engine Code Reader
If you are on a budget and are looking for a cheap check engine code reader, TopDon ArtiLink 201 is a great choice. TopDon is a new brand in the automotive industry, and its scanners are priced relatively low, but that doesn’t mean they lack functionality. The TopDon ArtiLink 201 will allow you to read and erase codes from the Engine Control Module. This inexpensive code reader not only can reset the check engine light but it can help you determine if your vehicle is ready to pass the emissions test. It can also display live sensor data and freeze frames. Scan tools offering the same options are listed for over $70 at Advance Auto Parts and Autozone.
Features
- Read / Clear Fault Codes from the Engine Control Unit
- Show Emissions Readiness Status
- View live data from ECU sensors.
Conclusion
Launching the Crader VII+ full system is a good choice if you are on a budget. For those looking for a more robust and powerful scanner, the YOUCANIC full system scanner will allow you to diagnose the engine, transmission, airbag (SRS light), and brake system (ABS, traction lights).
How do you use an engine code reader?
Using a check engine code reader is very simple. You plug the scanner under the diagnostic port, the dashboard, and above the brake pedal. Turn on the ignition but do not start the car. Allow for the scanner to turn on and press Read Codes. For more help, follow our guide on how to diagnose the check engine light.
FAQ
What is the best budget check engine code, reader?
Our top choice would be an ELM327 Bluetooth adapter and your smartphone—the cheapest and most powerful primary code readers. Remember, you will only be able to access the engine control unit. Honestly, if you are just looking to read and clear the check engine light, any code reader will work.
Will these code readers work in my car?
All these scanners work on 1996 and newer vehicles. Always check model compatibility before purchasing.
Where can I get the check engine read?
You can get your check engine light read for free at Advance Auto Parts, Autozone, and PepBoys.
Can you read codes without the check engine light on?
You can read pending codes even if the check engine light is not on.
Does Autozone let you use their code reader?
Yes, except in certain states.
Is it worth buying an OBD2 scanner?
An OBD-II scanner can be purchased for as little as $20. Even if you don’t plan on fixing your car, having an OBD-II scanner can be very helpful. Even if it is just so that you can educate yourself.
How can I reset the check engine light without a scanner?
By disconnecting the battery for at least 15 minutes. We do not recommend clearing the check engine light with this method or without fixing the problem. Fault codes can be used to diagnose problems, so erasing it this way will leave your mechanic with no codes to look at.
We hope you find the Top 5 Best Check Engine Code Readers guide helpful. Check these troubleshooting and repair guides for more help on your vehicle.
