Malfunction of the electronic immobiliser in peugeot 406 , the appearnce ot the key sign in the chick pannel , and the engine do not start at once but takes several time to work but will not start at all now

you could try resrtting the key pad by unplugging it for 15 mins and then plugging it back in mate






if this helps let me know


cheers
big mike

The ignition key may be defective or in need of a battery to generate the code needed to disarm the immobilizer. Hope this helps!

could be your crank sensor has failed.

usually it is behind or near the main crank pulley, not sure on your car's exact location.

Try disconnecting the battery for 10 minutes to reset the ecu and see if it restarts.

immobiliser problem main dealer me thinks

this car has no key pad as to new, after 1999 all pads are gone and its done through your key, is it cranking over ok, i suspect a faulty lift pump, you have to listen for a wine when you turn the key on, its the lift pump under rear seat.

I have 1996 Peugeot 406 (1.8 16v) and it's ignition coil pack was broken and the starting was difficult when the car was warm.  

have you tried another key

its an immobiliser fault ,dealer only so be prepared to lay the golden egg

sounds like a immobilisers problem have you got another key if so try that one if the car starts take it to your dealer and have all the keys recoded some times thay fail and lose there codes,
also some times the immobilisers box fails and you have to unplug it i cant remember where it is but on Monday when i go back to work i will find out and let you know

yes the control pad and the engine management are connected via a unit called the BSI this very expensive to replace around the $1500 AU price so you don't want to replace it if you dont have to the 406 had problems with immobilisers ecu which is able to be unpluged, most of the time this will solve the problem.
if need be tow the car to the dealer and ask them to unplug the imobiliser