Open the PSA Interface Checker.exe program as an Administrator.
Using the PSA Interface Checker to confirm a "440" or similar high-level revision ensures that the interface has the necessary hardware components to talk to modern CAN-bus systems found in newer Peugeots and Citroëns. Key Functions of the PSA Interface Checker Tool
The exact of the Peugeot or Citroën vehicle you are working on.
If you see errors like:
It is worth noting that when running DiagBox version 7.xx, the interface firmware updates automatically at software launch. Similarly, on version 9.XX, updates occur at the initiation of a diagnostic session. The PSA Interface Checker provides an alternative when manual control is required. psa interface checker 440 verified
If you have questions about specific error codes during the check, let me know the and the type of vehicle you are trying to scan, and I can suggest the next troubleshooting step. PSA Interface Checker and Lexia Version - French Car Forum
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Often considered the most stable "Gold" firmware for standard clones (Reference "B" or "C"). It provides a reliable balance of compatibility with both older Peugeot/Citroen models and the newer Diagbox 7.x - 9.x series.
: Missing hardware components may prevent the tool from talking to specific ECUs, even if it connects to the car's main BSI. Open the PSA Interface Checker
To help you get your diagnostic setup running, would you like to know which firmware version is required for a specific DiagBox release?
Genuine 440 hardware uses automotive-grade components rated for continuous use. Non-verified interfaces overheat, develop cold solder joints, and fail within months.
The tool will list available COM ports. Match the one assigned to your VCI in Device Manager. Click “Connect.”
: Restoring functionality to aftermarket hardware clones that have been corrupted or disabled by accidental automatic online updates. The Importance of Firmware Version 4.4.0 If you see errors like: It is worth
Never allow Diagbox to connect to the internet to check for updates. This will "brick" your clone interface.
This program acts as a bridge between your computer and the diagnostic hardware. Its main purpose is to update or restore the firmware
The "Verified" status typically means the tool can see the serial number and version, indicating the device is ready to connect to a car.
