Code help!

[kierann]

Hey guys, new to the forum!

Ive bought an insurance write off audi s3 2014. All work has been done and ive finally got it out on a drive yesterday!

All runs and drives perfectly. Only issues I'm having at the moment is; 

Loud start up revs sits at 1k for a minute then drops and quietens down during idle (am I right that this is normal?)

Engine oil level ok

Rough idle, it stutters like its about to stall maybe every 30 secs?

Bit smokey during idle (fault code shown for this)

Also loud rattle when engines warmed up, seems to be coming from camshaft cover top end.

Disconnected both camshaft magnets but didn't make a difference, (rattling wasn't loud at that point) 

 

I have plugged diag in and the fault codes shows; 

Ive changed spark plugs due to misfiring when I first bought it, I don't want to throw money into the car for replacing the wrong parts. Can anyone point me in the right direction on which part I need to be looking at? 

 

 

[Steve Q]

Could it be a cam sensor or lambda sensor