: Updating to Revision C via this tool is often required for the interface to communicate correctly with newer Peugeot and Citroën models (like the Peugeot 308 or Citroën C5) that use the CAN bus interface .
Here is everything you need to know about installing, using, and troubleshooting this essential diagnostic tool. What is PSA Interface Checker 4.4.0? psa interface checker 4.4.0
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