or turn key forward without starting turn off then on & off & turn on & leave it ...your odometer will show you a code or multiple codes it will be a p & some numbers write them down when it finishes it will say P done & scan through the codes again make sure you write them all down & post codes back in here & some people know the codes!!! hope that helps ya cheap & easy way to find out what is wrong without haveing to put it on a computer