I was wondering if anyone can help with advice. Two lights have lit up on the dashboard - the engine light and the spiral symbol which is flashing. This was accompanied by a lack of power. This happened immediately after I had asked a VW registered garage to estimate for a replacement sink tap; and they unasked also carried out a Vehicle Inspection Report. I have been told that a replacement EGR valve is required. Will a new EGR valve solve this problem?