07 3,0d diesel with bad injector

[cerixen]

Hi there,

I have a 07 X5 E70 which I just bought a few weeks ago, unfortunately without warranty
Now the car will stop the engine about 3-20 seconds after it was started. With the DIS i can see that it reports codes:
4450 - Injector Cylinder 5- Activation
4453 - Injector Cylinder 5- Activation

If I turn off the engine myself faster than the ecu can do it then it won't report this error code. Only when the car shuts down itself it will display this error code. So I assume this is the problem.

I assume I need a new injector for cylinder 5? However would this cause the ecu to stop the engine? No limp mode or anything?

Anyone with experiences like this?

Thanks