The most debilitating symptom is a . Because the immobilizer system cannot verify that an authorized key is present, the BSI blocks the engine control unit (ECU) from engaging the starter motor or supplying fuel to the cylinders. 2. "Key Not Detected" Warning Messages
A: In most regions, a body code (B-code) will not cause an automatic emissions failure, because it’s not an engine (P-code) fault. However, if the check engine light is illuminated, some inspection stations may fail you depending on local laws. Always clear the code before an inspection.
Start with cleaning and checking the connector. Move to replacing the air quality sensor. Only then consider wiring or BSI updates. By following this guide, you should have your automatic climate control working flawlessly within an afternoon, saving yourself a costly trip to the dealership.
If your Peugeot is throwing the B173D code, you can follow these steps to narrow down the issue:
.
Procedure: Turn off the engine, turn off all lights, wait 3 minutes, disconnect the battery, wait 5 minutes, reconnect, wait 2 minutes, then attempt to start. 5. Use Diagnostic Software (Lexia/Diagbox)
You do not need a mechanic for the diagnostic phase. A basic digital multimeter ($20) and an OBD2 scanner are enough.
This issue is rarely a simple mechanical failure. It is almost always a failure in the communication between the key, the key reader, and the BSI module.
The most common cause. Glow plugs have a heating element that expands and contracts thousands of times. Eventually, the tip breaks or the internal coil melts. When you test the resistance of a healthy glow plug, it should read between . A failed plug will read "OL" (Over Limit) or infinite resistance.
Inspecting the wiring harness between the reader and BSI for broken or corroded wires. Conclusion
If you are dealing with an intermittent or permanent B173D code, proceed through these repair steps ranging from the simplest fixes to advanced electronic tracking: 1. Execute a Hard Reset (BSI Reboot)
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learn moreThe most debilitating symptom is a . Because the immobilizer system cannot verify that an authorized key is present, the BSI blocks the engine control unit (ECU) from engaging the starter motor or supplying fuel to the cylinders. 2. "Key Not Detected" Warning Messages
A: In most regions, a body code (B-code) will not cause an automatic emissions failure, because it’s not an engine (P-code) fault. However, if the check engine light is illuminated, some inspection stations may fail you depending on local laws. Always clear the code before an inspection.
Start with cleaning and checking the connector. Move to replacing the air quality sensor. Only then consider wiring or BSI updates. By following this guide, you should have your automatic climate control working flawlessly within an afternoon, saving yourself a costly trip to the dealership. b173d peugeot
If your Peugeot is throwing the B173D code, you can follow these steps to narrow down the issue:
.
Procedure: Turn off the engine, turn off all lights, wait 3 minutes, disconnect the battery, wait 5 minutes, reconnect, wait 2 minutes, then attempt to start. 5. Use Diagnostic Software (Lexia/Diagbox)
You do not need a mechanic for the diagnostic phase. A basic digital multimeter ($20) and an OBD2 scanner are enough. The most debilitating symptom is a
This issue is rarely a simple mechanical failure. It is almost always a failure in the communication between the key, the key reader, and the BSI module.
The most common cause. Glow plugs have a heating element that expands and contracts thousands of times. Eventually, the tip breaks or the internal coil melts. When you test the resistance of a healthy glow plug, it should read between . A failed plug will read "OL" (Over Limit) or infinite resistance. "Key Not Detected" Warning Messages A: In most
Inspecting the wiring harness between the reader and BSI for broken or corroded wires. Conclusion
If you are dealing with an intermittent or permanent B173D code, proceed through these repair steps ranging from the simplest fixes to advanced electronic tracking: 1. Execute a Hard Reset (BSI Reboot)
