Ok let me explain my obd computer shows 2 error code picture below one is exhaust etc that is egr and bottom one is something to do with cambelt ? Someone told me on forums, and on facebook forums as well, that timings out ? My car had recall done but before I bought it, spoke to emissions audi centre they going to change egr free of charge yes, called audi now regarding this code that my obd shows they said we only go by our computers here in Audi not by any others and they said glow plug light is fault of egr which im having done on tuesday