Car going into limp moad

[chubb]

Car starts fine then when driving for a distance it cuts out and dies sometimes it takes a while to get it started again then it's in limp moad I've had it on the diagnostic machine and it's saying that a problem with central locking to drivers door and nothing mechanical could this actually be the reason the car is in limp has anyone got any ideas or ever had the same problem and had it fixed thanks 

[Steve Q]

Very unlikely the door mechanism is to blame. 

Could it be an issue with the crank sensor, turbo, maf, injector or lambda sensor as guesses.