How to choose OBD-II scanner? FULL Guide! Iamcarhacker

This article will introduce you to different scanner types, so if you want to know how to choose OBD-II scanner, you’re in the right place! I have tried dozens of different scanners and I will give you some things to consider before buying your first diagnostic tool.

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1. Engine code reader

Simple to use
No subscription/internet needed
Works only with engine
Erase check engine light

Best code readers

2. Bluetooth OBD

More functionality than the code reader
More apps to choose from
Slower connection (wireless)
Cheap

Best BT adapters

3. Scan tool

Service procedures
Works with all control modules
Complex scan
Bi-directional testing

Best Bi-Directional

4. Laptop OBD2

Professional software for low-cost
No subscription
Best for 1-brand software

Best PC scanners

5. Multisystem scanner

Works like a code reader
Can scan more modules
ABS, SRS, TCM…
Free updates

Best multi-system

Before you buy an OBD-II scanner…

Vehicle Coverage

Check Compatibility: Ensure the scanner supports your car or cars commonly driven in your area, especially if you plan to use it in a car shop.
Expect Inconsistencies: Even if a scanner should support a car, sometimes specific functions may not work. This can happen even if you saw it working in a YouTube video for the same car model.

Smartphone for Bluetooth OBD

OS Compatibility: Cheaper Bluetooth OBD adapters usually support either iOS or Android, not both. Get a Wi-Fi adapter for iPhones and Bluetooth for Androids.

Subscription/Update Cost

Check Fees: Many scan tools have paid updates. Without updating, you might miss out on new features or compatibility fixes.
Advanced Functionality Costs: Bluetooth scanners with advanced features like coding and bi-directional control often require yearly subscriptions. Without these, functionality may be very limited.

Feature Compatibility

Service Procedures: Features like DPF regeneration or ABS bleeding are very car model-specific.
Unlocking Hidden Features: If you’re buying a tool to unlock hidden features, confirm with the seller that it works for your specific car model.

Laptop Scanners

Separate Laptop Recommended: For safety, use a separate laptop for your scanner software, especially if it’s from less-known sources. Many require disabling antivirus for installation, which can be risky for your main computer.