Engine immobilizer fault

the vehicle needs to be plugged into a diagnostic computer to locate the exact cause of the fault and to reprogram the cars computer.

Here is how you can reset the immobilizer. It is kind of tricky, but trust me it works. Do like this:

- Disconnect the battery for at least fifteen minutes.
- When you are about to re-connect the battery, leave the drivers door open and have the car key outside of the engine starter.
- When the battery is on again, close the drivers door and turn the key to light up the instrument panel but do not start the engine yet.
- Open the drivers door and take away the key.
- Close the drivers door and start your engine.

Your problem is now solved!

The most common solution for this problem is to change the battery in the car-key, so the immobilizer is easer to "read" it.

Hope that helps!

It worked for me. Thank you so much.

Thanks vazz. It worked for me too.

Thank you so much from Belarus! It worked for my peugeot 807 2.2 HDI 2003!

Please , i own the same Peugeot 807 2.2 HDI 2005 model, the car was driving and suddenly stopped.it never starts again when i open ignition to step two the dashboard light comes up when i try to start it never starts but keeps revolving and runs the battery down. i called for diagnose which was done three times now and each time it comes up with different error codes, such as listed below. please i will be glad for any help on how to sort this issue this is getting to be three months now .


Fault >
Description
Status

P0340




Crankshaft synchronizing
No camshaft sensor signal
Permanent fault


P1435




Additive system fuel filler
Cappresent sensor fault
Permanent fault

P0110




Inlet air temperature signal
Short circuit to positive or
Open circuit
Permanent fault

P0571




Brake switch communication problem
Permanent fault
read trouble code

Fault
Description
Status


P0020



Intake variable cam timing solenoid short or open circuit bank 2
Faulty wiring and connections faulty camshaft profile control solenoid
read current trouble code

Also, recent i called a Peugeot mechanic after doing the diagnose he said the problem is from the com 2000, have anyone had such an issue before or have to replace com 2000 before? please help we need this car urgently.