2000 Disco II - My check engine light was flashing and I stopped and next day it cranks but won't start. I have an new Innova 3130C reader and it seems to be hooked up right - it sees the car and model etc. but says there are no codes to be read. I called Innova and the tech said it has to be in running condition to get the codes? That seems odd to me but OK. Any suggestions?