
Find Out Why Your Check Engine Light Is On
Plug the V520 into your vehicle's OBD2 port to read supported diagnostic trouble codes. Instead of seeing a warning light and immediately wondering what's wrong, you have useful information to investigate the problem.
Watch Your Car in Real Time
Go beyond a simple fault-code reader with live vehicle data. View supported parameters such as RPM, coolant temperature, fuel trims, MAP, vehicle speed, intake-air information, and more while the vehicle operates.
Check More Than Fault Codes
Access supported freeze-frame data, I/M readiness, vehicle information, O2 sensor information, and battery voltage from one handheld tool. It's designed to give DIY owners more visibility into what their vehicle is reporting.
Diagnose Without Your Phone
No need to rely on a Bluetooth dongle and use your phone as the diagnostic screen. The V520 has its own display, navigation controls, and dedicated DTC, I/M, and BAT shortcut buttons.
Keep & Share Diagnostic Information
Cloud-printing functionality is advertised for creating accessible diagnostic information. This can make it easier to retain or share supported diagnostic results when you need a second opinion.
One Scanner. More Diagnostic Visibility.
92%
9 OBD protocol variants shown
The supplied compatibility material lists nine OBD protocol variants across SAE J1850, ISO9141-2, ISO14230-4, and ISO15765-4 CAN.
90%
40,000 stored fault codes claimed
The product's promotional material advertises an upgraded DTC database of up to 40K stored fault codes.
90%
100s of real-time data streams claimed
Monitor supported vehicle operating data instead of relying on a fault code alone.
90%
3 dedicated shortcut buttons
Jump directly to DTC, I/M, and battery functions.
90%
1 plug-in tool
No internal battery is listed—connect it directly to a supported vehicle and start diagnosing.
V520 vs. Other Ways to Diagnose Your Car
|   | HomeHalo | Others |
|---|---|---|
Read supported engine DTCs |
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Live vehicle data |
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Dedicated screen |
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No phone required |
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Battery voltage display |
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I/M readiness |
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Freeze-frame information |
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Cloud-printing feature |
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Use from your driveway |
What Drivers Could Say
Frequently Asked Questions
Will this tell me why my Check Engine light is on?
Will this tell me why my Check Engine light is on?
It can read supported OBD2 diagnostic trouble codes associated with the Check Engine/MIL system. Those codes provide useful diagnostic information, but a code does not always identify the exact component that must be replaced.
Can it clear the Check Engine light?
Can it clear the Check Engine light?
It can clear supported diagnostic trouble codes and the associated warning light after the underlying issue has been addressed. If the fault is still present, the warning light may return.
Do I need an app or Bluetooth?
Do I need an app or Bluetooth?
No. The V520 is a dedicated handheld scanner with its own display and physical controls, so basic operation does not require turning your phone into the scanner interface.
What vehicles does it work with?
What vehicles does it work with?
The supplier advertises compatibility with most vehicles supporting the listed OBD2 protocols, including many vehicles after 1996. However, OBD requirements vary by country, model, engine, and year, so customers should confirm OBD2 compatibility before ordering.
Can this replace a professional mechanic?
Can this replace a professional mechanic?
No—and it isn't supposed to. The V520 helps you access diagnostic information before deciding what to do next. Complex repairs, safety-critical problems, and faults requiring manufacturer-specific systems may still require professional diagnosis.