B173d Peugeot Work ((full))

If the code persists, the diagnosis moves to . The technician would consult the wiring diagram (found in Peugeot’s Sedre software) to trace the circuit. They would disconnect modules one by one to see if the code changes. For example, if B173D is a "short to battery" on the interior lighting circuit, unplugging the overhead console might make the code switch to "open circuit," confirming the fault lies in the console rather than the BSI itself.

Diagnosing the B173D fault code requires a systematic approach: b173d peugeot work

💡 When buying a replacement switch, always use an OEM (Original Equipment Manufacturer) part. Peugeots are notoriously sensitive to the resistance levels in aftermarket electronic components, and a cheap switch may trigger the B173D code again within weeks. If you'd like more specific help, tell me: If the code persists, the diagnosis moves to

If these steps don't work, you may need a professional diagnostic tool like Lexia/Diagbox to re-program the keys or check for wiring faults. For example, if B173D is a "short to

Cannot unlock/lock with the fob. 5. Troubleshooting & Recommended Fixes BSI Intermittent faults - Peugeot Forums