The PSA Interface Checker is a utility used to verify the hardware and firmware status of the XS Evolution VCI (Vehicle Communication Interface) used for Peugeot and Citroën diagnostics. When a user refers to "440 verified," they are typically looking to confirm that their device is a "Full Chip" version capable of running higher firmware revisions required by modern software like DiagBox. Understanding the PSA Interface Checker
If your current hardware refuses to update or shows "Incompatible," you may have a "Lite" clone that lacks the necessary components. For reliable, pre-verified hardware, you can find high-quality 440 Bluetooth OBD2 Diagnostic Tools on retailers like eBay and Walmart, typically ranging from $66 to $149. psa interface checker 440 verified
Inability to read certain modules (like the Airbag or ABS) on newer CAN-bus vehicles. The PSA Interface Checker is a utility used
The "Verified" Update: The "440 verified" process involves using this specific version of the checker to flash a new firmware file (like vci_updater.com) onto the cable. Once updated and verified, the tool often identifies the device as Revision C, unlocking full functionality for modern PSA vehicles. Key Uses for the Checker Once updated and verified, the tool often identifies
In the PSA diagnostic ecosystem, the number “440” is not arbitrary. It refers to a specific hardware board revision and firmware stack originally found in the genuine ACTIA XS VCI. The ACTIA XS is the official PSA-approved interface. Over the years, multiple clone generations emerged:
