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

Problem Solved!

Took the plane over to Southtec Aviation in Salisbury, NC they ran the dongle and it pointed to an ignition issue.  Found a touch of corrosion on a plug cap for cylinder two and he inspected all the other plug leads.   He also reseated the ignition leads to all the plug wire.  No more intermittent lights.

BTW they are a ROTX Service Center and a Tecnam Service Center.  No listing of that anywhere on Rotax.com or on this site.

https://www.southtecaviation.com/