B173d — Peugeot

: Sometimes the car's computer needs a reset. This can often be fixed by a BSI Reboot

While this code can appear in any modern Peugeot, it is most frequently reported in:

The root cause is rarely a broken engine and is usually one of these electrical "gremlins": b173d peugeot

Close all doors, remove the key from the vehicle, and wait for the vehicle network systems to enter "sleep mode".

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]. : Sometimes the car's computer needs a reset

: The vehicle may crank but fail to start, or it may not respond to the start button/ignition at all. Central locking failure : The remote may fail to lock or unlock the doors. Potential Causes and Solutions

: Difficulties locking or unlocking the vehicle remotely. Common Causes : The vehicle may crank but fail to

: If a second key works, the issue is likely with the internal chip or hardware of the first key rather than the car's system.

Generic OBD2 scanners may not show the full details of this fault. To diagnose correctly, a dealer-level diagnostic tool (like with Diagbox ) is required to look at the BSI's live data to see if it is reading the key transponder. Potential Repairs and Solutions

The fault tracks back to an breakdown in communication between the encrypted transponder inside your key and the reading unit inside the vehicle cabin. The primary culprits include: Detailed Impact