[marmit2017]

I've been getting the codes 29f5 and 29f4 repeatedly after erasing them. The cel doesn't come on but I've noticed a lag in performance. When I press on the accelerator it doesn't seem to push like it used to. In addition my mpg have decreased drastically. I used to average around 20 city and almost 30 hwy when lucky, but am now averaging about 16 and 22. Wanting to know if it could be the cats or o2 sensors.

2009 BMW 328i xDrive

[marmit2017]

Originally Posted by BimmerGeeks

It could be either or. But being those codes are directly related to your cats, it may be more likely.

Time to do some diagnostics.

Will either of them cause an occasional rough idle?

[marmit2017]

Originally Posted by BimmerGeeks

It could be either or. But being those codes are directly related to your cats, it may be more likely.

Time to do some diagnostics.

Also what's needed to properly diagnose it? O2 sensor values while running?

[marmit2017]

Originally Posted by BimmerGeeks

Download and install Rheingold. It has an active 02 test that can rule them out & narrow it down to your cats.

I have a good cable. Would you be able to remotely check through teamviewer?

[marmit2017]

Originally Posted by BimmerGeeks

Sure. Shoot me an email tomorrow.

Are you free now?

[Komayo456]

Originally Posted by BimmerGeeks

I am not. Open a chat session on our site. Easier for communication.

Hey any resolution ?? Im getting the same issues .

[marmit2017]

Originally Posted by BimmerGeeks

I am not. Open a chat session on our site. Easier for communication.

Is there anyone that can help. I downloaded the software and operating system but I'm not able to get ahold of anyone through your websites chat or through this chat

[marmit2017]

Originally Posted by Komayo456

Hey any resolution ?? Im getting the same issues .

I'm still trying to figure it out. Does your car have the exact same symptoms? CEL? What year model?