Thermador Double Oven Error Code

My Thermador CM302 Double oven produces error code F34. I start it and it runs for 10-15 seconds then shuts off and throws the F34. I can start it again immediately and it will run. Any idea what the F34 indicates. Even though it runs the second time, I’m sure sooner or later it will not restart.

Thanks!

GatorFLHX