K-line VAG KKL 409.1 OBD2 USB Diagnostic Cable for VW, Audi, Skoda & Seat
The VAG KKL 409.1 OBD2 USB Diagnostic Cable is a popular tool for troubleshooting and diagnostics of older VW, Audi, Skoda, and Seat models. It uses the K-line (ISO/KWP) communication protocol and works excellently on vehicles manufactured between approximately 1994 and the early 2000s. With a red PCB with a genuine 9241A chip and FT232RL IC, you get a stable and reliable connection for easy diagnosis via computer.
⭐ Advantages of VAG KKL 409.1 Diagnostic Cable
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✅ Equipped with genuine 9241A chip + FT232RL for stable function
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✅ Support for dual K-line communication
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✅ Compatible with ISO9141 and KWP protocols
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✅ Fits many VW, Audi, Skoda, and Seat models from 1994 onwards
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✅ Perfect for troubleshooting engine and ECU on older vehicles
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✅ Simple USB connection – works with Windows 7 (and sometimes older OS)
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✅ CE- and FCC-certified
🔧 Functions
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Reads and clears error codes (DTC)
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Communicates with the car's ECU via K-line
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Support for ignition signal via L-line to wake up ECU
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Used with compatible software (e.g. VAG-COM 409.1 / VCDS Lite)
📊 Specifications
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Model: VAG KKL 409.1 OBD2 USB
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Connection: USB to computer (16-pin OBD2 to car)
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Chipset: 9241A + FT232RL
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Protocol support: ISO9141, KWP
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Operating system: Windows 7 (32/64-bit tested)
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Certifications: CE, FCC
🚘 Compatibility
✅ Support for, among others:
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Audi: A2, A3, A4 Cabriolet, A6, A8, S2, S3, TT
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VW: Beetle, Bora, Caddy, Corrado, Golf Mk2–Mk4, Jetta Mk3–Mk4, Passat Mk3–Mk4, Polo Mk3–Mk4, Touareg, Transporter T3–T5
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Skoda: Fabia, Felicia, Octavia Mk1–Mk2, Superb
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Seat: Alhambra, Altea, Arosa, Cordoba, Ibiza, Leon Mk1–Mk2, Toledo
❌ Not compatible with:
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Newer cars with CAN-bus (e.g. Golf 5, Passat B6, Audi A3 8P, Q7 etc.)
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Vehicles using VPW or PWM protocols
❓ Frequently Asked Questions (FAQ)
Can I use this cable on all VW and Audi?
No, it is only for older models that use K-line (up to approximately 2004–2005). Newer models require a CAN-bus-compatible cable.
What software works with the cable?
The cable works with VAG-COM 409.1 / VCDS Lite.
Does it work on Windows 10?
Windows 7 is officially supported, but some users have managed to get it to work on Windows 10 with the correct drivers.
👉 Buy the VAG KKL 409.1 USB OBD2 Diagnostic Cable for easy and affordable troubleshooting of older VW, Audi, Skoda, and Seat models. Perfect for those who want to read fault codes and perform basic diagnostics at home!
