Lane B Oil temp sensor error on cold weather start up

If once the engine warms up a tad and this fixes itself I'd say it may be just the cold. Let it warm up good before you cycle the ignition to remove the B light. No sense in cycling over and over until it quits. I take it it didn't do this during warmer outside temps? 

I live in Arizona so we don't get that cold to test a 912iS to see if it does the same thing. Maybe others here in cold country can weigh in that have a 912Is.

If the Lane B lamp flashed, there would be an entry in the ECU Fault Log.

What error does the BUDS Software report?
An OPEN or a SHORT Sender Fault might be an actual fault.
An "Out of Range" fault would be more in line with the ECU thinking that there is no way that a running (warm?) engine should ever have 5°C Oil and something might be wrong with the sender.

I agree with Roger. Let it warm up before resetting the fault.
If the Oil Temp won't display a valid temp. watch for the Coolant temp to reach >20°C.
By that time the Oil should be above 10°.

I have been flying here in Ohio with temp close to, but above 5°C.
I have not seen an Oil temp fault in my 912is.

If the engine rpm is greater than 2500 and the oil temp is not in the normal range you will get the error that you describe. 

This is the engines way of telling you you are not in the normal operating ranges and that it thinks there must be fault.

If this is what you are seeing then adjust the rpm of the engine to stay between 1800 and 2500 during warm up to avoid this fault.  

@Michael Burton.

You are absolutely correct. I tried it today at 0C, keeping RPM below 2500 on warm up, no Lane B fault light. 

If I set the RPM say 2400 it creeps up above 2500 in the first minute. So it needs watching to avoid a fault light. 

I am a new Rotax owner so a good learning. 

Many thanks.