You need an (often called the "Peugeot Planet interface"). Verify it has a Rev. C or Full Chip board inside. Cheap Chinese "Rev. B" interfaces will not work reliably with old software.
The following article is based on the content typically found in discussions regarding the PP2000 and Lexia diagnostic tools on automotive forums like MHH AUTO. It consolidates the historical context, software versions, and technical challenges associated with these "Old Versions." PP2000 - LEXIA OLD versions - MHH AUTO - Page 1
Both systems run on the same hardware interface (typically an Actia Pass-Thru or VCI) and, in later years, were merged into a single software package called . However, many technicians reject DiagBox for older cars because it can misinterpret sensor data, fail to access specific ECUs, or introduce communication errors. You need an (often called the "Peugeot Planet interface")
If you are working with older PSA Peugeot/Citroen vehicles (pre-2010), you already know that newer versions of DiagBox don’t always play nicely with legacy hardware or vintage ECUs. This thread is dedicated to the of PP2000 and Lexia. Cheap Chinese "Rev
This delicate balance is what makes forum threads on MHH AUTO so valuable. They serve as a technical repository for knowledge that is no longer officially supported by the manufacturer, without explicitly facilitating piracy. The community focuses on the technical aspects of the tool—making the hardware work, troubleshooting driver issues, and understanding the software's capabilities—rather than the distribution of the software itself.