Q'sA4

Hi, I am a owner of a 2003 Audi A4 1.8t Quattro. A couple weeks ago I had to replace my spark plugs and coils but few days later the engine light came on and won't go away. I thought it might be because I needed an oil change, so I got my oil changed but the light is still on. I have no idea what to do. If someone has Vag com and can scan it for me, and help me out that would be great thank you.