Keyless Entry Error

Hi all,

Within the last week my 2017 L&K Superb has developed a 'Keyless Entry Error', with constant warning noises which is driving me crazy!

Have done a quick diagnosatic scan and have come up with Code B117013 - "Front passenger Access/start system antenna , Open circuit". The other error I think is probably just due to the battery being disconnected last week.

Has anyone come up with this problem before? A quick Google suggests its the front passenger door handle but not sure if it could be a bad connection or the antenna itself? I'd rather not have to purchase a complete new handle if I can avoid it!

Thanks, Dean