2021 — Psa Interface Checker 440 Link

At its core, is an independent utility that allows direct communication with the Lexia 3 or PP2000 VCI hardware, bypassing the usual automated update process of DiagBox. It serves three crucial functions:

When working with Peugeot, Citroën, and DS vehicles, the software ecosystem uses (which houses legacy engines like Lexia 3 for Citroën and Peugeot Planet 2000 for Peugeot). However, the software cannot talk to the vehicle without the PSA XS Evolution Vehicle Communication Interface (VCI) . psa interface checker 440 link

The software version serves as a vital bridge. It enables older or clone hardware to achieve stable CAN-bus communication with modern Diagbox distributions (such as Diagbox v9.xx setups) without triggering device blocking or identification drops. Key Technical Specifications Specification Supported Hardware At its core, is an independent utility that

The "Interface Checker" is a utility tool within PSA diagnostic software (such as Diagbox or PP2000 ). It acts as a network diagnostic test. In PSA technical service manuals, the "440" designation typically refers to the Diagnostic Link or the Diagnostic Socket/Connection system. The software version serves as a vital bridge

The green LED on the interface flashes three times only, then stops.