Lane B Intermitent Light

Since you have G3X, when the lane light is on, go to the Engine page > Menu > FADEC Info and it should give you a diagnosis of what's triggering the lane light.

Check your coolant and oil temp differences. 

See here.

https://www.rotax-owner.com/en/915is-technical-questions/10184-flashing-lane-b-after-initial-start-and-warm-up

I had this same issue on a 912iS engine. EVENTUALLY after trying numerous things I removed the connectors off the ECU and applied a bit of dielectric grease over the connectors and pushed them back on firmly as I locked them down. Problem solved. What was irritating the lane error kept pointing at an injector.

Thanks all for the earlier comments. 

Here is more data.  I pulled a log from my Garmin G3X.  Now I am really confused.  Hard to see what is causing the Alarm.  I have attached the log from a flight in March and note the I get an ECU flag (Scroll to the last column and then scroll down) note the comment that says SET BARO. 

Then when I reset the errors go away.  Since I fly out of a Class C airport (KFAY) I set the altimeter before I taxi.  Not sure what the issue is.  The log is and Excel file. Since I am still learning both the ROTAX and the G3X I may be doing something ham fisted and not knowing it.

Gene