B173d Peugeot Work Today

| | Description | |------------|----------------| | Warning lights | Service lamp, engine fault light, or "Engine Failure" message on the dashboard. | | Intermittent starting issues | The engine may crank but not start (especially after a battery disconnect or low voltage event). It may then start normally after a short waiting period. | | Key not recognized | The dashboard may display "Key not detected" or similar, even when the key fob is inside the vehicle. | | Remote control malfunctions | Central locking may become unreliable; the vehicle may not lock or unlock from the remote fob. | | Hands‑free access problems | In models with keyless entry, the doors may not unlock when touching the handle. | | Multiple unrelated fault codes | A diagnostic scan will often show a long list of codes (e.g., B1808, B1137, B1744, B1715, B1716, B173A, B1805, B1811, B1825, B132A, etc.) that seem to affect all sorts of systems—lights, windows, air conditioning, navigation, parking sensors. | | Engine starts but stops after ~10 seconds | Some users report that the engine fires up, runs for about 10 seconds, then stalls. This suggests the immobilizer is cutting fuel after initial startup. | | Loss of cruise control | In some instances, cruise control becomes unavailable. | | No communication with engine ECU | Code U1F2E (No Communication With Engine ECU) is often stored alongside B173D. |

Even if it cranks, low voltage can cause ECU communication failures. 4. Symptoms b173d peugeot work

Remove the lock assembly from the door. Use a multimeter to test the pins on the lock connector (refer to a wiring diagram for your specific model, typically 4 to 6 pins): | | Key not recognized | The dashboard

No. The same code is used by other PSA‑group brands (Citroën, DS) and in some cases, by other manufacturers (e.g., Ram) for different faults. In Peugeot/Citroën, the definition is key‑identification related. | | Multiple unrelated fault codes | A

: The antenna routes this signal to the BSI.

This article provides a comprehensive guide to the B173D fault code for Peugeot vehicles. It covers what the code means, how it manifests, the common underlying causes, a systematic diagnostic approach, and step‑by‑step solutions to help you resolve the issue effectively.

A corrupted BSI often causes false B173D codes. You can clear temporary electronic glitches by performing a manual hardware reset without specialized tools.