Have you tried the Pedal Test?
If you hold the accelerator and brake pedals down and turn the key 1 click the EML should start to flash out the codes
10 flashes = 0
pause
1 flash =1
pause
etc to create a 4 digit code
I'm sure there is a better guide on here so worth doing a search
Once you have the codes post them up as it could be something simple.
cheers
Roy