Check Injection then Injection Fault then Limp mode

Hi there,
I have a 200. Was sat in traffic and the check Injection light came on. Then went to put my foot down and it came up with Injection Fault. Now every time I start it, does the same and goes into limp mode.
Anyone got any clue what's happening? I've plugged it in and nothing seems to come up. Also taken out the injectors and they're all pumping.
Cheers
 
Do you have a sprintbooster installed? They can give this code if not correctly inserted/come loose.
 
thats it..mine did that to me a couple of times..take it out clean it and connect back again..