DIRT CLOD

My chk eng light comes on once in a while and I reset it. I always do that if it only comes on every few weeks or so so I can see how quickly it comes back. I figure if it comes back within a couple of days time to scan. I scanned b4 and know the o2 sensor codes once in a while. I am sure its goiung bad(altitude changes and humidity changes) set it off.
Anyways, I reset and 2 days later ON, reset 2 days later ON, scan. o2 sensor as suspected, but I have a code relating to "no ignition referance signal". Now I am assuming this code came up when I stalled out on a fairly steep grade climb.

Is that what it is ?..It sounds right to me, I think the rotor turning with no fire?
If I am wrong and this is something that NEEDS to be fixed please help....Thanks

I just want to make sure everything is as absolutely proper and functioning correctly before I get too far into my next Mod.