Looking for some expertise here. I'm running codes P0172, P0175. However I know my A/F is running rich after 3200rpm. Are the sensors actually bad or just picking up the tuning? I'm getting the car dyno tuned in a few weeks. Should I replace the O2's? or would my tuning clear the codes? To note my MAF was changed and all 6 coils are only 2 years old (all updated versions and no misfiring).

Also the codes say Bank 1 and 2, but which sensor is it exactly?

Thanks,

 

You have a EU....you have a Wideband....you know your running rich...why don't you experiment and tune yourself?


whats your AF line look like.

 

3200rpm is open loop, the ECU doesn't depend on the o2 sensors to set AFR. My guess would be no, sensors are probably bad. Get it tuned and see what happens...