B173d Peugeot Link
: The most common culprit is a low CR2032 button cell battery inside the remote, weakening its transponder broadcasting range.
: Many electronic communication errors can be cleared by performing a "soft reboot" of the BSI module. This involves a specific sequence of disconnecting and reconnecting the battery.
Before attempting complex diagnostics, replace the battery in the key fob, even if it seems to work for locking the doors. 2. Try the Spare Key
Peugeot Warning Lights: Dashboard Symbols, Meanings & Next Steps
Other modern Peugeot models (2008, 308, 508) utilizing the PSA Group’s latest electronic architecture. Key Symptoms of a B173D Fault b173d peugeot
If you are faced with this code, follow these troubleshooting steps, ranked from easiest to most complex. 1. Check Key Fob Battery
Below is a detailed breakdown of what this code means, its symptoms, causes, and how to resolve it.
The code indicates that the BSI has received a signal from the key, but it’s either incomplete, corrupted, or doesn’t match the data the BSI expects.
PSA Group vehicles are known for corroded connectors, especially in lower bumper areas exposed to water spray. Broken wires, bent pins, or oxidation at the 3-pin connector are frequent culprits. : The most common culprit is a low
When this code is active, the vehicle typically exhibits security-related failures, including: No-Start Condition
The hands-free passive signal weakens, forcing the reader to rely entirely on a physical mechanical backup slot.
A warning message appearing on the dashboard or touchscreen.
Third-party security relays (such as a Ghost 2 system) can interrupt the "ignition on" signal paths, generating false-positive key faults. 📋 Step-by-Step Diagnostic and Fix Procedure Key Symptoms of a B173D Fault If you
This is considered a last resort when all other checks have failed. A Peugeot dealership or a specialist automotive electronics repair shop can sometimes repair the faulty BSI unit. If the unit is replaced, it must be programmed to your specific vehicle, which requires specialized tools.
Unplug the electrical connector from the glow plug control unit and test each glow plug directly at the unit's connector pins. You need the pinout diagram for your specific Peugeot engine (DV6 or DW10). For cylinder 4, you should see approximately 0.6 to 1.2 Ohms .
The BSI requires separate power connections to function correctly: one constant battery supply and one ignition-switched supply. If either supply is intermittent (due to a loose connection or faulty relay), the BSI may reset intermittently, losing its ability to identify the key.