B173d Peugeot -

On Peugeot and Citroën (PSA Group) vehicles, is defined as:

Peugeot electronics are notorious for throwing "ghost codes" when the main 12V battery is dying. Low voltage during the start-up sequence can cause the BSI to fail the key identification check. b173d peugeot

The car starts fine some days but fails others, often in cold or damp weather. On Peugeot and Citroën (PSA Group) vehicles, is

If you've connected a diagnostic tool to your Peugeot and seen , you are likely dealing with a frustrating "no-start" or "key not detected" scenario. This specific manufacturer code is a common headache for owners of modern models like the Peugeot 308, 3008, 5008, and the Partner van. What Does Fault Code B173D Mean? If you've connected a diagnostic tool to your

It sounds simple, but a fresh CR2032 (or similar) battery fixes a significant percentage of B173D errors. After replacing it, you may need to re-sync the key by putting it in the ignition, turning to position 2, and holding the lock button for 10 seconds.

Sometimes the BSI simply needs a reboot. Glitches in the software can lead to a "Permanent Fault" status for B173D even if the key is perfectly fine.

The remote buttons may stop working entirely. Why is it Happening? (Causes)