B173D

The "story" of in a Peugeot is essentially a tale of a car that has forgotten its owner . In technical terms, B173D is a diagnostic fault code that indicates a failure to identify the mechanical/electronic key or the remote control [25]. What happens to the car?

Possible Causes of the B173D Peugeot Error Code

In simpler terms, the car's computer (ECU) has sent a signal to fold or unfold the mirrors, but the electrical circuit was not completed. The system detects a break in the "loop," meaning the electricity is not reaching the mirror motor or is not returning to the sensor.

Start with cleaning and checking the connector. Move to replacing the air quality sensor. Only then consider wiring or BSI updates. By following this guide, you should have your automatic climate control working flawlessly within an afternoon, saving yourself a costly trip to the dealership.

. This is a manufacturer-specific code generated by the Built-in Systems Interface (BSI) when it fails to communicate with or verify the transponder in your key. The Automotive Technician Common Symptoms Intermittent Non-Start : The car may fail to start on the first few attempts. Key Recognition Failure

If these DIY steps don't work, a technician usually needs to use a Peugeot Planet or Diagbox scanner to clear the code and manually re-code the keys to the vehicle [25].

The B173D code is rarely a software issue; it is almost always physical. Common causes include: