The error usually logs a sub-code attribute (such as ), signaling that the module detected an incorrect, un-synchronized, or completely absent data package during an ignition ON or vehicle start request. Common Symptoms of Code B173D
What specific of Peugeot are you having this issue with?
The car's computer may need a hard reset to re-establish communication. Comm2000/Clock Spring Issue:
Do not assume the battery is good. A battery that has enough voltage for the central locking (short range) might not have enough power for the immobilizer communication (shorter range). Step 3: Check Vehicle Battery Voltage b173d peugeot
The internal receiver slot or the proximity antennas hidden inside the center console or dashboard fail to read the transponder chip.
Here are your repair options, from cheapest to most involved.
Unplug the sensor. Inspect the 3 pins. Are they green or white (corrosion)? Spray with electrical contact cleaner. Reconnect and clear the code. Does it return? If not, corrosion was the issue. The error usually logs a sub-code attribute (such
If you're having trouble with this, I can help you find a qualified Peugeot technician or a specialized service center, just tell me your location. Share public link
If the BSI is corrupted, it may need to be updated, reconfigured, or replaced by a specialist.
Modern Peugeot vehicles, including popular models like the 208, 308, and the Rifter, are masterpieces of electronic integration. While this technology provides comfort and safety, it also means that, occasionally, specialized diagnostic codes appear. One such code, increasingly found in diagnostic reports for 2023-2025 models, is the fault code. Comm2000/Clock Spring Issue: Do not assume the battery
Low vehicle battery voltage (below 12V12 cap V ) often triggers false immobilizer codes. ✅ Summary
If possible, swap the Cylinder 4 glow plug with Cylinder 1. Clear the codes and restart.