I'm late to this conversation. looking at Buying a used 2015 Passat SE TDI. 57k miles from hood stickers and web I see:
Phase 1 done at 18k miles (8/2017)
Phase 2A 37k (6/21).
Webpage "Partiallocal dealer printout:
Campaign: (phase 2a&b) closed
"Active" warranty Section:
TDI 11-162 TDI End 5/23/2026 odometer 162,000
TDI Gen3PH2 phase 2B Repair Kit End 1/1/2050 odometer 600,000
Service Tech insisted all modifications complete. Asked what the open warranty meant on phase 2b. he said he didn't know contact VW, but all mods complete.
So I believe I still have phase 2b to go on this car. ALSO, every used 2015 VW VIN I entered on the VW site returned partial for the mods. lists complete for earlier cars.