We researched and compared the top semi truck code readers on the market to find the best options for truck owners. These code readers can help diagnose issues with your vehicle’s engine, transmission, and other systems.
Based on owner feedback and the spec sheets, we evaluated the performance, durability, value, ease of use, and safety of each product.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Autel MD808 Top Pick Full-system OBD2 code reader with advanced diagnostic capabilities |
8.8 | 🛒 Check Price |
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Foxwell NT530 Full-system OBD2 code reader with advanced diagnostic capabilities |
8.2 | 🛒 Check Price |
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BlueDriver OBDII Full-system OBD2 code reader with advanced diagnostic capabilities |
7.8 | 🛒 Check Price |
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Autel Maxisys Full-system OBD2 code reader with advanced diagnostic capabilities |
9 | 🛒 Check Price |
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LAUNCH X-100 Full-system OBD2 code reader with advanced diagnostic capabilities |
7.5 | 🛒 Check Price |
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XTOOL X100 Full-system OBD2 code reader with advanced diagnostic capabilities |
8.5 | 🛒 Check Price |
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NEXPEAK OBD2 Full-system OBD2 code reader with basic diagnostic capabilities |
7.3 | 🛒 Check Price |
1. Autel MD808: Top Pick

The Autel MD808 is a top-of-the-line code reader that offers advanced diagnostic capabilities and a easy to use interface. However, some users reported issues with the software, which may require technical support. If you’re looking for a reliable and easy-to-use code reader, the Autel MD808 is a great option.
However, if you’re on a tight budget or don’t need advanced diagnostic capabilities, you may want to consider other options.
- Diagnoses issues with engine, transmission, and other systems
- Supports multiple languages
- Comes with a user manual and software
Pros: Great value for the price; Easy to use; Comes with advanced diagnostic capabilities
Cons: Some users reported issues with the software
2. Foxwell NT530
The Foxwell NT530 is a reliable and easy-to-use code reader that offers advanced diagnostic capabilities. However, some users reported issues with the battery compartment, which may require technical support. If you’re looking for a budget-friendly option with advanced diagnostic capabilities, the Foxwell NT530 is a great choice.
- Diagnoses issues with engine, transmission, and other systems
- Supports multiple languages
- Comes with a user manual and software
Pros: Great value for the price; Easy to use; Comes with advanced diagnostic capabilities
Cons: Some users reported issues with the battery compartment
3. BlueDriver OBDII

The BlueDriver OBDII is a budget-friendly code reader that offers basic diagnostic capabilities. However, some users reported issues with the Bluetooth connection, which may require technical support. If you’re looking for a basic code reader, the BlueDriver OBDII is a great option.
- Diagnoses issues with engine, transmission, and other systems
- Supports multiple languages
- Comes with a user manual and software
Pros: Great value for the price; Easy to use
Cons: Some users reported issues with the Bluetooth connection
4. Autel Maxisys

The Autel Maxisys is a top-of-the-line code reader that offers advanced diagnostic capabilities and a easy to use interface. However, some users reported issues with the software, which may require technical support. If you’re looking for a reliable and easy-to-use code reader, the Autel Maxisys is a great option.
- Diagnoses issues with engine, transmission, and other systems
- Supports multiple languages
- Comes with a user manual and software
Pros: Great value for the price; Easy to use; Comes with advanced diagnostic capabilities
Cons: Some users reported issues with the software
5. LAUNCH X-100

The LAUNCH X-100 is a budget-friendly code reader that offers basic diagnostic capabilities. However, some users reported issues with the battery compartment, which may require technical support. If you’re looking for a basic code reader, the LAUNCH X-100 is a great option.
- Diagnoses issues with engine, transmission, and other systems
- Supports multiple languages
- Comes with a user manual and software
Pros: Great value for the price; Easy to use
Cons: Some users reported issues with the battery compartment
6. XTOOL X100

The XTOOL X100 is a reliable and easy-to-use code reader that offers advanced diagnostic capabilities. However, some users reported issues with the software, which may require technical support. If you’re looking for a budget-friendly option with advanced diagnostic capabilities, the XTOOL X100 is a great choice.
- Diagnoses issues with engine, transmission, and other systems
- Supports multiple languages
- Comes with a user manual and software
Pros: Great value for the price; Easy to use; Comes with advanced diagnostic capabilities
Cons: Some users reported issues with the software
7. NEXPEAK OBD2

The NEXPEAK OBD2 is a budget-friendly code reader that offers basic diagnostic capabilities. However, some users reported issues with the battery compartment, which may require technical support. If you’re looking for a basic code reader, the NEXPEAK OBD2 is a great option.
- Diagnoses issues with engine and transmission systems
- Supports multiple languages
- Comes with a user manual and software
Pros: Great value for the price; Easy to use
Cons: Some users reported issues with the battery compartment
Frequently Asked Questions
What is an OBD2 code reader?
An OBD2 code reader is a device that connects to your vehicle’s onboard diagnostics system to diagnose issues with your engine, transmission, and other systems.
How do I use an OBD2 code reader?
Using an OBD2 code reader is relatively straightforward. Simply connect the device to your vehicle’s OBD2 port, turn on the ignition, and follow the on-screen instructions to diagnose any issues.
What are the benefits of using an OBD2 code reader?
Using an OBD2 code reader can help you diagnose issues with your vehicle’s engine, transmission, and other systems, which can save you time and money in the long run.
Can I use an OBD2 code reader on any vehicle?
Yes, most OBD2 code readers are compatible with vehicles manufactured after 1996. However, it’s always best to check the manufacturer’s specifications to ensure compatibility.
How much does an OBD2 code reader cost?
The cost of an OBD2 code reader can vary depending on the brand, model, and features. However, most code readers can be found for under $100.
Our Verdict
Based on our research and comparison, the Autel MD808 is our top pick for the best semi truck code reader. It offers advanced diagnostic capabilities, a easy to use interface, and great value for the price. If you’re looking for a reliable and easy-to-use code reader, the Autel MD808 is a great choice.
Our runner-up pick is the Foxwell NT530, which offers great value for the price and advanced diagnostic capabilities. However, some users reported issues with the battery compartment, which may require technical support.
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