Advacomp, if you just have a FADA leak and no codes, they will remove your FADA and replace the faulty O-ring most likely. I would strongly urge you to discuss replacing the FADA entirely for the new intermediate shafts that have been going in since 2022. Most recently 2023+ have been getting the latest version of the intermediate shaft which also will require a new driver's half shaft. Hbalek kindly posted the part# for 2020-2021 to get this fix but is also in the TSB 23-2174. It is almost a travesty to do all that labor to replace an O-ring when the FADA is likely to fail at some point--not if but when. Even if you have to pay for parts, if the dealer covers the labor under warranty, it'll be worth it.