Code Light Fix
Like many owners I was plagued with the code light coming on occasionally, however when I nearly got stuck on a ferry because of it I decided a fix was needed.
I had tried most of the suggestions on the forum but the fault always came back usually after a couple of weeks.
Thinking about how the circuit worked I decided that the problem is probably that there is not enough wetting current to stop the antenna connections oxidising. So I unplugged and replugged both ends of the cable a couple of times to clean the plug contacts.
I have now gone for 9 months and have never had the code light problem again.