2010fvrs

Hi everyone I have a MK2 Fabia VRS 2010 only one way to put this is I don’t have a clue what I’m looking for. My car is throwing up the flashing EML. Did it earlier when I was showing a fiesta st that there car was all shout and no trousers.. I’ve taken my car to Skoda and they said they couldn’t find any codes.. I think they just cleared it and said otherwise. sound like it’s misfiring but I’ve recently had new plugs. Is it worth getting a carley plug In thing or the R8 Coils and adapter and see what happens ?

This is a bit of a weird one for me as I never really noticed until recently but my fabia when I turn my lights on to side lights my fog lights come on instead of the actual ones in the head lights and the same obviously when my dipped is on. No side lights on at all.. just wondering if anyone else has or is having this and how do I go about getting it back to normal because the lights are really dim?