I have been getting a temporary failure of my left EGT sensor reading occassionally. It is usually soon after startup and after about a minute it reads normally. Does this mean the probe is going bad, or should I just take it out of the exhaust pipe and clean the probe or something? Do these things need periodic cleaning? I imagine they get some carbon buildup on them.

It is a Dynon Skyview system using Dynon supplied EGT probes for my Rotax 912s.