Bolero "antenna short to ground"

Hi,

I scanned my new Mk II FL vRS recently and the the Bolero is unhappy, saying there is an antenna short to ground. I don't know how good the radio reception is supposed to be but I don't perceive it as being bad, as both the mechanic and I believe it should be with a ground short on the antenna. If the code is cleared, it comes straight back so it doesn't look like a glitch.

Obviously, there's an antenna connection on the back of the radio and I seem to recall seeing something on here about there being another in the roof lining at the back. Is there anywhere else I should be looking and which order would you recommand taking things apart please?

Thanks,

Paul.