Hi i just changed all my engine fluids and when i tried to start my car the battery was dead, so i jump it and now my service engine light is on. I have a turboback exhaust but have the cell fix and it never came on before. Does anyone know what the problem could be? Thanks

 

if possible run a diagnostic on it

 

go to autozone and get them to pull the code..........prolly crankshaft sensor or some sh*t......they do it for free.