850 OBD-II
850 OBD-II App Info
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App Name
850 OBD-II
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Price
1.99
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Developer
xiaotec
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Category
Auto & Vehicles -
Updated
2025-06-30
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Version
1.9.7
Frequently Asked Questions
How do I connect my smartphone to my car using the 850 OBD-II app?
Connect an ELM327 adapter to your vehicle's OBD-II port, pair it via Bluetooth/Wi-Fi/USB, then open the app and follow on-screen setup instructions for a smooth connection.
Is the 850 OBD-II app compatible with all car models?
The app is optimized for Volvo models, especially from 1996-2000 P80 and P2 series, but some features may work with other makes depending on the vehicle's configuration.
How can I read fault codes and clear them with this app?
Navigate to the Diagnostics section, select 'Fault Codes,' view the DTCs, and tap 'Clear Codes' to reset the fault indicators on your vehicle.
Can I monitor real-time sensor data during driving?
Yes, go to the Live Data menu, select sensors like engine RPM or fuel consumption, and view real-time scrolling data for ongoing vehicle monitoring.
Does the app support programming or resetting service lights?
Yes, the app allows Service Light (SRI) reset and basic programming—located under the Service or Programming menu in the app's main interface.
Are there features that require a paid subscription?
Some advanced functions like remote module programming or detailed system diagnostics may require a subscription, which can be managed via Settings > Account > Subscription.
How do I access additional system modules for diagnostic purposes?
In the app, go to Modules or Systems section, then select specific modules such as ABS, ECM, or VGLA to perform detailed troubleshooting and testing.
Can I perform remote programming and module adjustments with this app?
Yes, features like remote module programming and parameter adjustments are supported—access these under the Programming or Module Settings menu.
What do I do if I encounter connection issues or the app crashes?
Ensure your ELM327 adapter has the latest firmware, check Bluetooth/Wi-Fi stability, restart the app, and verify vehicle compatibility; contact support if problems persist.
Is the app suitable for beginners without prior diagnostic experience?
Absolutely! The app features an intuitive interface and helpful explanations, making it accessible for beginners to perform basic diagnostics and maintenance tasks.
