O2 feedback trim????

[dls93tsi]

I just logged a run and noticed my o2 feedback trims are in the 160s when im on the throttle but only 100 when off the throttle.

The problem is, I dont know why it is changing it, cause my O2 sensor is reading .00-.10v across the board i think it is shot.

Does anyone know what changes O2 feedback trim and what kind of difference it makes. If you want i will post the whole log but i mainly am concerned about that.

 

[deusxmachina]

The O2 sensor changes your O2 trim. The O2 trim changes your low, med, and high trims. The O2 trim shows pretty much immediate changes, whereas the other trims change slower. And yeah, sounds like getting a new O2 might be a good idea.

 

[kpt4321]

When you are off the throttle, the car goes into decel mode, where these is zero fuel coming out of the injectors. As such, it knows not to use the O2 sensor so it just holds the O2 trim at 100.