what is the codes that you get.
To check them manually:
switch everything off in the car, then ignition.
switch car ON
wait 3 sec
pump accelerator 5 times within 5 sec
leave accelerator for 10 sec
hold accelerator for 10-12 sec - engin light will start to flicker
count the engin light flashing in segments.
10 fast flickers are a 0