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: It frequently appears alongside other codes like B1808 (engine ECU immobilizer unlocking fault) or B1624 (protection unit relay faults). Common Causes
The Peugeot fault code primarily indicates a failure in identifying the mechanical or electronic key (including hands-free remotes) within the vehicle's reader . This error is often logged by the Built-in Systems Interface (BSI) , which serves as the central control unit managing immobilizer functions. Understanding Fault Code B173D
If you are facing a "no start" situation with code B173D, you can attempt these diagnostic steps: Electrical circuit fault: have your vehicle repaired
: The internal transponder chip or the hands-free remote battery may be failing.
: A temporary communication error within the BSI can lead to "unexpected reinitialization" and key recognition failure.
When this code appears, the vehicle's security system is having trouble recognizing the transponder signal from your key. Common symptoms and context for this fault include:
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: It frequently appears alongside other codes like B1808 (engine ECU immobilizer unlocking fault) or B1624 (protection unit relay faults). Common Causes
The Peugeot fault code primarily indicates a failure in identifying the mechanical or electronic key (including hands-free remotes) within the vehicle's reader . This error is often logged by the Built-in Systems Interface (BSI) , which serves as the central control unit managing immobilizer functions. Understanding Fault Code B173D
If you are facing a "no start" situation with code B173D, you can attempt these diagnostic steps: Electrical circuit fault: have your vehicle repaired
: The internal transponder chip or the hands-free remote battery may be failing.
: A temporary communication error within the BSI can lead to "unexpected reinitialization" and key recognition failure.
When this code appears, the vehicle's security system is having trouble recognizing the transponder signal from your key. Common symptoms and context for this fault include: