General rain proof engine????

[Tonka73]

Hello all

I have just bought a Y plate JTD ELX Multipla and have a minor ???? fault when it rains, or at least up to yet it has only occured when its raining , the engine contol fault light appear and drops the engine to sick mode. When it stops raining and I guess something dries out, ten mins ish on the motorway it clears and everything is fine


Any ideas on the cause???? and the solution

 

[Tonka73]

Ok

So it seem that it still occurs when its not raining.

Does any one know which fault reset themselves and which don't

This will shorten my list ?????

S.O.S Tonka