5 Best OBD2 Scanners Under $50 (Budget Tools I Tested)
Last Updated on March 13, 2026 by Juraj
You don’t have to spend a fortune on a diagnostic scanner as a DIY mechanic. Some of the cheapest OBD2 tools on the market still provide enough functionality to read fault codes, monitor live data, and perform basic diagnostics.
After testing more than 100 diagnostic tools on different vehicles, I found several scanners under $50 that offer surprisingly good performance for the price.
These tools are perfect for basic diagnostics, checking used cars, clearing engine fault codes, and monitoring live sensor data.
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Quick picks – best scanners under $50
Thinkcar BD6 – Best overall scanner under $50
One of the most powerful budget scanners available. It offers full-system diagnostics and works surprisingly well for such a cheap device.
Delphi DS150 — Best cheap professional tool
A very popular diagnostic interface used by many DIY mechanics and small garages. When used with the right software it can access many vehicle modules and advanced diagnostics.
You can have short product description here. It can be added as and enable/disable toggle option from which user can have control on it.
Best for
• Deep diagnostics on older vehicles
• Accessing multiple vehicle modules
• Cheap professional diagnostic setup
• Good compatibility with European cars
Konwei KDIAG — Cheapest bi-directional scanner
One of the cheapest scanners that still supports full-system diagnostics and active tests on some vehicles.
Best for
• Cheap entry into advanced diagnostics
• Full system scans (mostly asian brands)
• Service functions on supported cars
• Very low price
Quick Recommendations:
Thinkcar BD6
The Thinkcar BD6 is the powerhouse in its price range: full-system diagnostics, 5 popular service resets, and free lifetime updates. Hard to beat for versatility.
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Delphi DS150
The best value-for-money scanner, especially on older vehicles. Offers multi-system scans, service resets, and even bi-directional testing.
Konwei KDiag
Not the widest coverage, but still impressive: full-system scans, bi-directional tests, and some service resets. On brands it doesn’t fully support, it still works as a reliable engine code reader.
Ancel AD310 (310 BT)
A simple engine-only code reader that clears faults, resets the check engine light, and checks readiness monitors. Super fast and easy: a top budget pick for basic scanning..
Vgate Icar PRO 2s
Don’t let the low price fool you this adapter hides one of the fastest ELM chips, with rock-solid connection. Works with 100+ apps (iOS / Android / Windows).
Scanner overview
Thinkcar BD6 overview
Thinkcar BD6 is one of the most capable scanners in the budget category. It provides access to multiple vehicle modules and supports many diagnostic functions normally found on more expensive tools.
Because of its strong functionality and affordable price, it is one of the best entry-level scanners currently available.
Delphi DS150 overview
Delphi DS150 is a diagnostic interface that has been used by mechanics for many years. When paired with diagnostic software on a laptop it can access many vehicle modules and advanced parameters.
This makes it a very powerful option for DIY mechanics who want deeper diagnostics for a low price.
Konwei KDIAG overview
Konwei KDIAG is one of the cheapest scanners that still supports full-system diagnostics and some advanced features.
Despite its low price, it can read data from multiple modules and perform several service procedures depending on the vehicle.
Ancel AD310 overview
Ancel AD310 is a simple but extremely reliable engine code reader. It focuses mainly on engine diagnostics but works very well for reading and clearing fault codes.
Because of its simplicity and reliability it is often recommended as a first diagnostic tool for beginners.
Vgate iCar Pro 2S overview
Vgate iCar Pro 2S is a small Bluetooth OBD2 adapter that connects to smartphone diagnostic apps such as Car Scanner, Torque or OBD Fusion.
When combined with a good diagnostic app it can provide live data monitoring, fault code reading and many useful diagnostic functions.
When is a cheap scanner enough
A scanner under $50 can still be extremely useful for many diagnostic tasks.
Typical situations where these scanners work well:
• checking engine fault codes
• clearing check engine lights
• monitoring live sensor data
• checking readiness monitors
• basic used car inspections
However, if you want to perform advanced diagnostics such as coding, module adaptations or professional repairs, you will need a more advanced diagnostic tool.
Choosing the right scanner
Can’t decide? I reviewed all these scanners separately as well.
| Scanner | My review |
|---|---|
| Thinkcar BD6 | Open full review |
| Delphi DS150 | Open full review |
| Konwei KDIAG | Open full review |
| Ancel AD310 | Open full review |
| Vgate iCar Pro 2S | Open full review |
If you want a more powerful diagnostic tool with full-system diagnostics and advanced service procedures, check my guide here:
Best bi-directional OBD2 scanners
If you prefer Bluetooth adapters that work with smartphone apps, you can also see my guide here:
Conclusion
Even very cheap diagnostic tools can be extremely useful for basic car diagnostics.
Scanners like Thinkcar BD6, Konwei KDIAG, and Vgate iCar Pro 2S offer excellent value for money and can help you diagnose many common problems without spending a lot of money.
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