The Mrs Astra H has suddenly decided to cutting out at random times. No warning lights or loss of power it just cuts out but will restart straight away. I've plugged the opcom in and the only code is B3055 in CIM module and sometimes is also appears in the immobiliser. So I'm fairly sure the CIM has started randomly started misreading the key. Is this likely to be the CIM failing or another fault?

Cheers

Neil