The part number for the is typically 6441.C8 or 6441.C6 (always verify with your VIN). Generic OEM brands like Valeo, Hella, or Meyle produce reliable units for half the dealer price.
If your Peugeot records this code in its BSI memory logs, you will likely experience one or more of the following symptoms:
If power or ground is missing, check fuses and wiring continuity. b173d peugeot
Erase the B173D code, start the engine on a cold morning, and re-scan. If it returns immediately, the fault is permanent.
In simple terms, the car's (Built-in Systems Interface—the main computer) or the immobilizer system cannot recognize the key fob you are using to start the car, even if it is present in the dashboard slot or inside the cabin. Common Symptoms of B173D The part number for the is typically 6441
Navigate to the BSI Live Data streaming menu and monitor the following state parameters:
The Peugeot B173D code is a common, yet solvable, keyless entry issue often related to communication failure between the key fob and the vehicle's BSI module. By addressing key fob batteries first and ensuring your vehicle has the latest software updates, this error can typically be resolved quickly. Erase the B173D code, start the engine on
Before diving into fixes, it’s critical to understand the BSI loses its ability to identify the key.
Disconnect the negative (-) car battery terminal and wait .