Although it could be acritical bit of infomration you don't bother to say what vehicle your motorhome is based on and just hint that it may be a Fiat.
On th ebasis that Fiat use similar designs across their ranges, this may be useful (Actually, you DID do a search for - say- "fiat code light" before you asked us to help, didin't you? It's just that I got to this info in about 40 seconds.)
http://www.fiatia.com/fman-434.html
http://www.fiatforum.com/punto-ii/138209-fiat-punto-code-light.html
http://community.preloved.co.uk/forums/discussion/30625/fiat-punto-key-code-amber-light.html
Of course, if it's not a Fiat them I'm up poo creek., December 2015
