Open the Diagbox icon on the virtual desktop to begin diagnosing your vehicle. Avoid Common Download Pitfalls
| Version | Vehicle Coverage | Stability | Clone VCI Support | Best For | | :--- | :--- | :--- | :--- | :--- | | | Up to 2020 | Poor (VCI disconnects) | Difficult | Avoid | | 9.96 | Up to 2021 | Excellent | Good (with patch) | Professional DIY | | 9.125 | Up to 2022 | Fair (heavy) | Poor | Dealers with original VCI | | Diagbox 10.x | 2020+ only | Good | None (requires online pass) | New car specialists | Diagbox 9.96 Download
Diagbox is the official diagnostic software used by PSA Group (Peugeot and Citroën) dealerships. Unlike generic OBDII scanners that only read basic engine codes, Diagbox allows for deep-level access to the vehicle’s ECU. It effectively replaces older proprietary tools (like Lexia for Citroën and PP2000 for Peugeot) with a unified interface. Open the Diagbox icon on the virtual desktop