B173d | Peugeot

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

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.

Turning the key or pressing the Start button does nothing. b173d peugeot

The physical coil or antenna that picks up the transponder signal (usually around the ignition switch or in the center console) may be faulty or have a loose connection. Troubleshooting and Fixes

On Peugeot and Citroën (PSA Group) vehicles, is defined as: The remote buttons may stop working entirely

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.

The car starts fine some days but fails others, often in cold or damp weather. Glitches in the software can lead to a

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?

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.

While a faulty key is the most obvious culprit, B173D is often a symptom of wider electrical "confusion" in the Peugeot's complex BSI system.