Took the Zed to my mates garage. He said the code was something to do with the Lambdas not getting hot enough ??? Anyway, I explained that it happened after the car had sat for 3 months and it came on when I tried to start it but the battery was too dead, to which he replied that it may have caused the EML to come on. Either way it's been wiped, he said otherwise the car was running fine. Unfortunately he wiped the code while I was making the tea so I didn't get a chance for him to tell what exactly was the fault code which is my fault for not asking in the first place.