B173d Peugeot ((top)) Now

B173D

Fault code on a Peugeot indicates an "Error identifying the mechanical/electronic key or hands-free remote control" . This means your car's Built-in Systems Interface (BSI) or Body Control Module is struggling to recognize the signal from your key or transponder.

• Broken Wiring (Most Common): The wiring harness that passes from the door frame into the mirror housing is subject to constant bending every time the door is opened and closed. Over time, these wires can fray and snap.
• Corrosion: Water ingress in the mirror connector plugs can cause corrosion on the pins, preventing electrical contact.
• Failed Mirror Actuator: The small electric motor inside the mirror housing (the actuator) may have burned out or seized due to age or debris.
• Damaged Door Loom: In many Peugeot models (like the 207, 208, 307, or 308), the wiring loom inside the door itself can become damaged by the window regulator mechanism or the door latch.

Scenario D: Carbon Fouling without a break

Replace the Key Fob Battery:

This is the easiest and cheapest first step. b173d peugeot