This question must have been covered already but I cannot find on forums. I just bought a 51 plate 307. Previous owner disconnected battery. Reconnected and discovered would crank but not start. He had no codes. My question is what is the safest and best route for me to acquire codes and am I going to run into problems? I collected the car from the address on V5 and the guy proved he was the owner listed on V5. Thanks in anticipation.