B173d — Peugeot

Code indicates a mismatch. Essentially, the Engine ECU (or another module) is saying, "I am sending a message, but the BSI is either not recognizing me, or the BSI is configured for a different version of this car."

Once you’ve fixed the code, follow these tips to ensure it doesn’t come back: b173d peugeot

In Peugeot and Citroën vehicles, is not a feature but a specific diagnostic fault code (DTC) related to the vehicle's security system Fault Code Definition indicates a failure in identifying the mechanical/electronic key Code indicates a mismatch