Due to the carbon buildup mentioned earlier, the tip of the glow plug fuses to the aluminum cylinder head. When you apply brute force with a wrench, the glow plug shears off, leaving the threaded body inside the head. Removing a snapped glow plug requires specialized tools (extractors) and sometimes removing the entire cylinder head, which costs $1,500+.
Possible accompanying codes: (Immobilizer reading error) or B173A (Driver door presence sensor fault). Causes of the B173D Code
The B173D Peugeot code remains an enigma, shrouded in mystery. While we've uncovered some potential leads, much more research is needed to crack the code. Further investigation could involve: b173d peugeot
: Sudden battery voltage drops can desynchronize the rolling security code shared between your remote control and the vehicle's immobilizer memory.
The hands-free passive signal weakens, forcing the reader to rely entirely on a physical mechanical backup slot. Due to the carbon buildup mentioned earlier, the
: B173D is rarely found alone; it is frequently stored alongside related codes like B1808 (Engine management ECU immobilizer reading error) or B173A (Driver's door presence detection error). 🔍 Common Root Causes
: The vehicle does not acknowledge the presence of a hands-free remote. "Economy Mode Active" the glow plug shears off
The fault on Peugeot/Citroën indicates an "intermittent non-start fault" involving the hands-free remote identification. It is rarely a "dead" car and usually a "signal" or "power" issue. Always check the key battery first. Test with the spare key. Consider potential radio interference.