The transponder chip inside the key may be damaged or de-synchronized.
: Replace the key fob battery and attempt to use a spare key to rule out a localized transponder failure. b173d peugeot
: If a second key works, the issue is likely with the internal chip or hardware of the first key rather than the car's system. The transponder chip inside the key may be
: If the above steps fail, use a dedicated diagnostic tool (like Diagbox) to check for deeper BSI or wiring faults. : If the above steps fail, use a
Peugeot BlueHDi engines are notorious for carbon buildup. Because the glow plugs extend into the combustion chamber, they become crusted with hard, black carbon. This carbon can:
: This is a standard "soft reset" for Peugeot/Citroën electronics. You can find specific procedures for this on community resources like the Peugeot Forums or via video tutorials like the BSI Reset Procedure.
: If the car starts with a second key, the issue is isolated to the original key fob.