Psa+interface+checker+440+2021 ((new)) May 2026

The PSA Interface Checker 440 (version 4.4.0) is a diagnostic utility tool used to manage the firmware of the PSA XS Evolution VCI (Vehicle Communication Interface). It is primarily used alongside Diagbox, Lexia 3, and PP2000 software to ensure the hardware is recognized and running the correct firmware version for the vehicle being diagnosed. Key Features of PSA Interface Checker 440

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Safety Warning: If you are using a "clone" interface, never allow Diagbox to update the firmware automatically over the internet. Use the PSA Interface Checker to manage updates manually to prevent the device from becoming unusable. The PSA Interface Checker 440 (version 4

This tool is typically used in the context of Peugeot, Citroën, DS, Opel, and Vauxhall vehicles (PSA Group, now Stellantis) for diagnosing and verifying electronic control unit (ECU) communication, often via the VCI (Vehicle Communication Interface). Use the PSA Interface Checker to manage updates

Hardware Revision Check: Identifying if a device is Revision B or Revision C (Full Chip).