Sucks but glad you got it done. I had a similar experience at the dealer. After telling them exactly what is done to the car, including FMIC, they told me they should be able to get it covered under PZEV warranty. I authorize their initial service charge (~$150) and leave the car with them for the day. They call me back and tell me they can't warranty the sensor because my FMIC is disturbing the flow of air and probably caused the radiator/sensor to malfunction
. I politely explain that this is a known issue with the sensor failing and has nothing to do with any other hardware. They were having none of it. Which I understand because this issue is above their level. But.....they were going to keep the initial service charge despite me being very clear about my modifications. Long story short, they eventually returned my car and my money. That was the last time this car will ever go to a dealership.
I eventually had Stratified Tuning turn off the U102F and U1030 via my tune. Been CEL free for awhile now and it feels great after months and months of staring at that thing.