Yellow emission light 07 X5 53K

[gwinder]

OK...here is a link to the file:

https://www.amazon.com/clouddrive/sh...hare_link_copy

How do I get the freeze frame data? I can see it on the iPhone but don't see a way to send it?

Thanks

[jfoj]

I am not an iPhone user, sometimes there are hidden menus where you touch and hold on the screen and another menu will pop?

You can do a screen grab as well.

You can capture the screen on your iOS device using the Sleep/Wake and Home buttons. Press and hold the Sleep/Wake button on the top or side of your iPhone, iPad, or iPod touch, then immediately press and release the Home button. You can find the screenshot in your Photos app.

I think if you run a Report it will gather the Freeze Frame info as well.

Of you do not see the Report tab, rotate the phone to landscape and you will see it on the far right under the Diagnostic section.

Also post all the Codes as well.

Initial look at the Log is the LTFT is sky high. Lean condition or possibly bad misfiring causing what appears to be a Lean condition.

Really need to see the codes, Freeze Frame and 4 minute warm idle Log as well.

[gwinder]

OK...here is a link to the freeze frame data which also also the log from this morning...P0171 and P0174 are the codes again.

https://www.amazon.com/clouddrive/sh...hare_link_copy

Thanks

Gary

[jfoj]

Typical Lean codes.

Most likely an intake air leak or MAF related. Intake air leak can easily be ruled out by Smoke Testing.

You can do this with about $15 in parts.

Cheap fluid transfer pump from the local Auto Parts store. A few rubber gloves and rubber bands and a few cheap cigars.

https://www.youtube.com/watch?v=AsgB9eBl58I

Best to rule out the simple and obvious problems before dropping bigger money on parts.

Still would best to also see a 4 minute warm idle Log again.

The problem here is if there is an intake air leak, it will cause the MAF to under report because air will be bypassing the MAF.

It might be something as simple as an intake boot that was not installed properly and has pulled off. Not sure if the intake boot is like the M54 engines where the small tube cracks.

I think this may be like what your engine has?

Genuine BMW | Intake Boot/Air Duct (E70 X5, E71 X6) - BimmSport

The smaller tube typically connects to the ICV, assume this may be the same for your engine?

[gwinder]

Here's a link to the idle log...

https://www.amazon.com/clouddrive/sh...hare_link_copy

Thanks

Gary

[jfoj]

My best guess is an intake air leak of some sort at this point based on the latest warm idle graph.

Suggest a smoke test to rule out any intake air leaks before proceeding to a MAF.

If there are no intake air leaks, then I might point the finger at the MAF.

But as I mentioned, previously, intake air leaks can and will bypass the MAF so the MAF reading can be lower than expected.

[gwinder]

OK...my dealer got me a new MAF to try before buying...if it still throws codes he can send it back for a refund....attached is a link to the log after the MAF was installed...

https://www.amazon.com/clouddrive/sh...hare_link_copy

Anything stick out?

Thanks

Gary

[jfoj]

Still shows as Lean, but how far have you driving on the loaner MAF?

[gwinder]

OK...so 500 miles with the new MAF Sensor and no CEL. I'll post a new log now that the MAF is settled in for analysis.

Thanks

Gary

[jfoj]

I will look at it once you get it posted.