



▲ 1 r/e46
These readings were taking at 2500 rpms. My codes are P0420&430. I’m trying to tell if my cats are done for. But I feel like my upstream 02 sensors are reading what my downstream sensors should be. Is it true that both sensors S2 are for downstream reading my cats? If so are my readings backwards? I’m confused
u/Impressive-Pound6988 — 9 days ago