5 oxygen sensor OBD codes. Help!

[AWCR1MC]

Originally Posted by optigrab

Check for an exhaust leak?

Update JB4 and reset the adaptations?

I highly doubt its my jb4 since I have taken it off before and still get the same codes. Not to mention I have reset the adaptations tons of times and it has the most up to date hex there is.

I'll check for an exhaust leak tomorrow....I'm guessing you're referring to the possibility of the gasket going from the downpipes to mid pipes as being burnt out? I didn't realize that would do enough to throw codes like its been doing. Thanks for the advice.

[optigrab]

Originally Posted by DV135i

I highly doubt its my jb4 since I have taken it off before and still get the same codes. Not to mention I have reset the adaptations tons of times and it has the most up to date hex there is.

I'll check for an exhaust leak tomorrow....I'm guessing you're referring to the possibility of the gasket going from the downpipes to mid pipes as being burnt out? I didn't realize that would do enough to throw codes like its been doing. Thanks for the advice.

No problem!

Have you done any logging of your air fuel ratios? It could be injector issues as well. What index are your injectors?

[AWCR1MC]

Originally Posted by optigrab

No problem!

Have you done any logging of your air fuel ratios? It could be injector issues as well. What index are your injectors?

I have done some logging a while back when the issue first presented itself. Ever since then I've replaced all injectors, coils, plugs, and the 2 pre-cat o2 sensors. All that is left is for me to replace the 2 post cast sensors along with changes out the gaskets in case there's an exhaust leak.

I'm not sure what index the injectors are. I had BMW replace them for me, since I have a friend that works there.