Demystifying Fault Code B173D in Peugeot Vehicles: Symptoms, Causes, and Solutions
After addressing any voltage or fuse issues, clear all fault codes using a compatible diagnostic tool (Diagbox is preferred, but many generic OBD2 scanners can read and clear manufacturer‑specific codes). Then drive the vehicle for 15–20 km. Re‑scan to see if B173D returns. If it does, note whether it appears alone or with other codes. b173d peugeot work
Keyless entry failure, engine refuses to crank, intermittent start issues Demystifying Fault Code B173D in Peugeot Vehicles: Symptoms,
Occasionally, the BSI module undergoes software desynchronization. This frequently occurs if someone attempts unauthorized telemetry or telecoding modifications with incorrect parameters, resulting in supplementary errors like (Service parameters configured incorrectly). Step-by-Step Diagnostic & Workaround Guide If it does, note whether it appears alone
[Check Battery & Fob] ──> [Perform BSI Reset] ──> [Scan Live Data] ──> [Re-program / Replace] 1. Test the Basics First
It is important to clarify upfront that within the official Peugeot service manuals or generic OBD-II (On-Board Diagnostics) databases. Peugeot typically uses codes like Pxxxx (Powertrain) or Bxxxx (Body) followed by four digits (e.g., B1805). However, in the context of automotive diagnostics, a code like "B173D" suggests either a typographical error, a manufacturer-specific internal code from a high-end scan tool, or a code related to a specific control module (e.g., the BSI – Built-in Systems Interface).
Below is a review covering the most likely scenario (a typo for a standard Peugeot model workflow) and the technical scenario.