Cirrus Vision SF50 pilot reported a FADEC Control Degraded Red CAS message and performed a diversion and for a precautionary landing.

Narrative

While cruising at FL300 the red CAS warning message: 'FADEC Control Degraded' came up. I followed the checklist and did reset the FADEC. The warning message stayed on. I followed the final part of the checklist which is asking for the engine IPS (In Plane Switching) switch. The switch was already in the ON position. I did reset the FADEC again but no positive result. Waited another few minutes and tried a reset again. Message stayed on. The checklist last point says; Land as soon as possible. I informed ATC about the problem and asked for a diversion to an airport nearby with acceptable weather conditions. ATC suggested ZZZ and I agreed. ATC asked if I wanted to request priority handling but I did not think it was necessary at that time. All engine indications were in the green except that I saw a grey bar at the N1 gauge. On the way to ZZZ the weather was getting bad within minutes and The airplane started to pick up ice fast. I reported this to ATC and was asked if I want to request priority handling. I did. I was assigned to Runway XX RNAV approach and until I broke out of the clouds at about 1;800 ft. encountered pretty severe turbulence. Landed the airplane without incident. My best guess at the moment is that either the probes were iced up or a probe failed.Suggestion - I did not know what exactly was causing the warning message and how it would impact the safety of the engine. After talking to several pilots I may have not waited long enough to let the FADEC reset. This would have given me also more time to decide for a better diversion airport