Psa Interface Checker 4.4.0 !link! -
Click on "Select File" to choose the firmware file you want to flash. Common files to turn a "B" interface into a "C" type include firmware_NLC_pour flash serial B to C.COM or similar .COM files.
Avoid using long USB extension cables when flashing firmware, as signal degradation can cause data corruption during the write phase.
Connect your Lexia 3 / XS Evolution interface to a USB 2.0 port on your PC. Do connect the OBD end to a vehicle yet.
It allows users to identify the current firmware version and hardware revision (Revision B or C) of their VCI (Vehicle Communication Interface). psa interface checker 4.4.0
It helps determine if a tool has "full chip" hardware or a "cut-down" version, which affects its ability to communicate with modern CAN-bus vehicles. Why Version 4.4.0 Matters
The Interface Checker is primarily used by DIY mechanics and technicians to:
Attempting to flash low-quality "Lite" or "B-clone" hardware with official "C-serial" firmware. Click on "Select File" to choose the firmware
: It contains an "Activate" feature that triggers the connection between the PC and the diagnostic hardware. Why Version 4.4.0 is Critical
Always use the short USB cable that came with your Lexia 3 device and plug it directly into a rear motherboard port (if using a desktop) or a USB 2.0 port (if using a laptop). Conclusion
: Most community guides on Drive2 and automotive forums emphasize that clones should never be updated through the official DiagBox internet prompt, as only the PSA Interface Checker should be used for controlled, offline updates. PSA Interface Checker and Lexia Version - French Car Forum Connect your Lexia 3 / XS Evolution interface to a USB 2
The checker now identifies clone interfaces with greater accuracy, reducing false “No Interface Found” errors. It also supports the newer OBDLink and Actia pass-thru standards.
Here is a summary of the key features and changes typically associated with the PSA Interface Checker in version 4.4.0:
Minimalist design ensures quick navigation without a learning curve.
Connect your PSA/Citroën Lexia USB cable to the computer. Launch Software: Open the PSA Interface Checker tool.
Use the checker to verify that the Serial Number is recognized as a valid 921815 format, not empty or corrupt.