06 X5 3.0i p0174 p1093

[Bdc101]

Since you switched O2 sensors and it didn't follow the sensor, and since bank 1 seems fine (both the trims and not throwing a code), it seems like the only thing left is the injectors - perhaps one of the injectors is throwing way too much fuel in?



One other thing to consider, is where does the secondary air get pumped into the exhaust manifold? I am not sure if there's one point for the whole manifold, or one point for each bank. I'm wondering if it was clogged on bank 2 then, could it throw that code. But if it's misfiring then this is probably not the case.


Also keep in mind that the P0174 is super common for all M54s of this age. It might not be related to your misfire. Just food for thought - not sure if any of this will help