406 HDi Central Locking Problem

When I press my blipper to lock my car it locks and then immediataly
unlocks again.All the locks move except the front passenger door lock.

If I lock the front passenger door lock first from inside then the central
locking will work on all the other doors.After unlocking the car again the
passenger door remains locked,the central locking will work on all the
other doors whilst this one door remains locked.


Is this a serious problem or will it be relatively easy to fix.
Any advice gratefully received.

 

I had something like this on my 405. The garage changed the lock - or
the servo that operates it - in the door that was different, and then
everything worked again.

I think it's some sort of safety feature that stops you from locking the
car from outside if one of the locks is faulty. Or maybe it is just
the general wonkyness of 405 accessory electrics ...

 

It is something to do with the lock or latch on the passenger door. If the
door is not closing properly then the CL will unlock again. Similarly if the
lock on that (or any) door does not work, then the system will unlock again.