BMW error code help

[coopersim]

Can anyone help with these errors please? It's on a 325d that won't start (starts for a few seconds, then stalls)

Heating - no communication possible
Instrument - A559 KOMBI: Supply was switched off (terminal 30 g-f) - no matching fault symptom
DDE - 4453 DDE: Injector, cylinder 5, activation - unknown fault - fault currently present
DDE - 4452 DDE: Injector, cylinder 5, activation - Negative side, short circuit to positive side

 

[Atari]

Injector failure?

Clear the codes. Move the injector from Cylinder 5 (number 1 as the front of the engine closest to the front bumper) to another cylinder, try and start the car, check if error code follows it.

 

[coopersim]

Thanks, are they difficult to remove? Looking at a picture of them I can't even see how to get it out