A Konnwei fault code reader gives you quick access to your car's engine management system – directly via the OBD2 port. Whether you want to turn off the check engine light, read fault codes, or monitor live data in real-time, Konnwei offers an affordable, reliable, and easy-to-use alternative for both home mechanics and professionals. With models like KW208, KW680, and KW850, you get features often found only in significantly more expensive units.
Here you'll find a wide range of Konnwei OBD2 fault code readers – from simple beginner tools to more advanced scanners with color screens, live data, freeze frame data, and support for multiple vehicle systems.
What does a Konnwei fault code reader do?
🔧 A fault code reader from Konnwei allows you to:
-
📋 Read fault codes (DTC) – engine-related issues, e.g., misfires, lambda sensor faults
-
🧼 Clear fault codes – turn off the check engine light (MIL) after resolution
-
📊 Display live data in real-time – temp, RPM, airflow, fuel trim, etc.
-
🧊 Freeze frame data – view system status when the fault occurred
-
✅ Check I/M readiness – emission check before inspection
-
💨 Test O2 sensors and EVAP system (on compatible cars)
Popular models – which one should you choose?
🔹 Konnwei KW208
-
Perfect as a first fault code reader
-
Monochrome screen, simple menu, clear DTC interpretation
-
Compact, lightweight, and affordable
-
Suitable for all OBD2 cars from 2001 (petrol) / 2004 (diesel)
🔹 Konnwei KW680
-
Color screen with icon menus
-
More detailed live data and freeze frame data
-
Support for VIN code reading and vehicle information
-
Suitable for both private and simpler professional use
🔹 Konnwei KW850
-
Advanced model with faster chip
-
Battery voltage test, O2 sensor tests, EVAP system
-
Supports most EU, US, and Asian vehicles
-
Storage of historical data and fast scanning
Why choose a Konnwei fault code reader?
✅ Affordable but powerful tools – more functions than many more expensive models
✅ Easy to use – plug & play, no apps required
✅ Compatible with most cars that comply with the OBD2 standard
✅ Fast fault identification – saves time and workshop costs
✅ Clear screens and menus – some models with Swedish language support
Compatibility
🛠️ Supports:
-
Petrol cars from 2001 (EU)
-
Diesel cars from 2004 (EU)
-
American cars from 1996
-
Supports over 60 brands, including:
Audi, BMW, Citroën, Dacia, Fiat, Ford, Honda, Hyundai, Mazda, Mercedes, Nissan, Opel, Peugeot, Renault, Toyota, Volvo, VW, etc.
💡 Note: These units primarily read engine-related fault codes (ECU). For ABS, SRS, EPB, etc., special tools are required.
Who is a Konnwei fault code reader suitable for?
🧰 Car owners who want to save money – find and fix faults yourself
🎓 Beginners in diagnostics – KW208 is perfect to start with
🛠️ Hobby mechanics – KW680 or KW850 provides deeper data
👨🔧 Car dealers & workshops – quick scanning before sale
🎁 Gift for car enthusiasts – useful, affordable, and easy to understand
Frequently asked questions
Can I turn off the check engine light?
Yes – all models can read and clear DTC codes, which turns off the check engine light if the problem is resolved.
Do the readers work with diesel cars?
Yes – diesel from 2004 onwards according to the EU OBD2 standard.
Is a battery or external power required?
No – all Konnwei readers are powered via the OBD2 socket when connected to the car.
Do you have a Swedish manual or support?
We provide guides in Swedish and are happy to help you via our support.
Why customers choose our Konnwei fault code readers
✅ Only tested, genuine models – no low-quality copies
✅ Clear information on functions and car compatibility
✅ Fast delivery and easy ordering
✅ Support for both technical questions and choosing the right model
✅ Suitable for both private and professional use
Summary: Simple troubleshooting, quick solution
With a Konnwei fault code reader, you get a smart, affordable tool to identify and understand your car's engine problems. Turn off warning lights, monitor sensor data in real-time, and take control of your car – without workshop visits.
🚗 Plug in, read out, fix – with a fault code reader from Konnwei.
