my car (skoda felicia) suddenly switched off and no more working i checked every thing was normal but still not working(the engine is trying but no start) lastly the engineer said the controle unit has erased the key codes so that it can not be working till i get the code . the problem is i miss the code and i don not know from where can i get it ? no one could help me till now

Your local Skoda dealer may be able to help, but it might not be cheap.