engine light on - help

[Grantsmith82]

i do have the N62 engine...
whats the N62's intermediate lever issue). ??

the car has been running fine up to this morning, i did have this happen a couple of times when starting the car you can hear it not running smooth and juddery and the engine light would flash but turning car off and on again and all was ok ..
however today started the car it was runnin juddery and would feel the judder while foot rested on the pedal the engine light remained on though and now wont go out..
also tried it again tonight blipped the accelarator a little and you can hear its not running smooth and car shaking when bliping the accelator.. any ideas what issue could be?