After you've replaced the battery, changed a fuse, or done any electrical repair, you reset the BSI. This procedure is critical to clear the old, incorrect data from the BSI's memory and let it re-learn the key's code:
The issue is frequently solved by replacing the key battery, but it can occasionally point to complex BSI issues. Start with the basics—battery and key check—and work your way through the troubleshooting steps.
Q: How do I repair the B173D Peugeot work code? A: To repair the B173D Peugeot work code, replace the actuator, repair or replace the wiring, replace the BCM, or reset the BCM. b173d peugeot work
The issue is rarely due to a catastrophic hardware failure. Instead, it usually stems from one of four primary culprits: 1. Low Key Fob Battery or Signal Interruption
Locate the main earth points for the BSI, engine ECU, and ABS unit (usually on the chassis near the fuse boxes, or on the cylinder head). Ensure the terminals are clean, tight, and free from corrosion. A poor earth can cause the BSI to send corrupted signals, triggering B173D and other codes. After you've replaced the battery, changed a fuse,
: The dashboard lights illuminate, but turning the key farther yields complete silence, or the engine turns over indefinitely without catching.
Clear codes with OBD2 / PP2000 diagnostic tool (generic scanners may not reset SRS codes – need Diagbox / Lexia). Q: How do I repair the B173D Peugeot work code
If you notice these symptoms along with the B173D code, the BPGA is a prime suspect. On some Peugeot models, this is a known weak point. While a diagnostic scan is the best way to confirm a BPGA issue, a visual inspection for signs of burning or corrosion around the module (often located near the battery) can be helpful.
: A temporary communication error within the BSI can lead to "unexpected reinitialization" and key recognition failure.
The engine refuses to crank because the immobilizer system does not authorize the start.
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