Finally got the diagnosis,  Faulty oxygen sensor between the air box and throttle body.  Still have to order the part.
But I got the machine back at least and it's working fine.

They did confirm it was the faulty sensor and was NOT due to dirt, etc. in the air intake.
I put a snorkel and new filter in the machine the first weekend I had it.

Thanks Red - At this point, I'll let the shop diagnose it and just wait it out...  But that's a good tip, and now that I have the service manual, I'm going to take on all the service myself (at least as much as I can).  Waiting a month before I can even have a tech look at it and plug in a code reader is getting really frustrating...

I'll report back here when I hear what the issue was...

On my 2019 Z1000, the EFI light does a constant blink (no pause, etc) just constant.  I've tried charging the battery, double checking leads, etc. Turning the ignition off then on to reset it - nothing seems to work to clear it.   I took it to my dealer and they have had it for 3 weeks and will be another 1-2 weeks before they can even diagnose it. Good dealer - just swamped....

Anyone have any advice for me?  I'm going nutz not having my machine in the middle of mountain riding season... 
Debating about just picking it back up and trying to fix it myself.

I'm handy - but have ZERO knowledge when it comes to electrical systems in these machines and don't have a code reader to even know what it's doing anyway.

Hi All,
Age and and knee injury convinced me in was time to hang up the dirt bike and get a SXS.
Besides - now the wife the grandkids can join me too.