'13 35d - Honeymoon is Over - P045F -Exhaust Gas Recirculation B Control Stuck Closed

[Best4x4xFAR]

Originally Posted by Ricky Bobby

Do you live in a free state that doesn't have emissions testing for diesels? I see you're in Maryland so its doubtful. Thankfully we do, once something fails in the emissions system that is not covered under warranty, my wifes will be getting full deletes and amended tune to match.

Maryland has Emissions testing, but Diesels are currently exempt. Not sure if it is possible that may change in the future or not..

I'm Very curious about diesel tunes (at least low level tunes that leave Emissions equipment in place), but I know my wife will not want to drive a Diesel if it emits smoke from the exhaust, or smells..

So I'm hesitant to even entertain the deletion options..

Wondering if this is a Carbon Buildup related item. Seems like a lot of Carbon buildup related issues on these cars..

EDIT: Found this link (https://www.bmwusa.com/explore/bmw-v...nty-books.html), whihc seems to imply that it would be covered under the California Emissions warranty, as this seems to extend to Vehciels in Maryland a a few other states. See what the Service advisor has to say I guess..

[Ricky Bobby]

Originally Posted by Best4x4xFAR

Maryland has Emissions testing, but Diesels are currently exempt. Not sure if it is possible that may change in the future or not..

I'm Very curious about diesel tunes (at least low level tunes that leave Emissions equipment in place), but I know my wife will not want to drive a Diesel if it emits smoke from the exhaust, or smells..

So I'm hesitant to even entertain the deletion options..

Wondering if this is a Carbon Buildup related item. Seems like a lot of Carbon buildup related issues on these cars..

EDIT: Found this link (https://www.bmwusa.com/explore/bmw-v...nty-books.html), which seems to imply that it would be covered under the California Emissions warranty, as this seems to extend to Vehicles in Maryland a a few other states. See what the Service advisor has to say I guess..

Glad to hear Maryland is good with that -



but like you said, its the wifes car - you will get some soot, and some diesel stink, when you do the deletes, its inherent nature of the beast once the DPF/SCR is gone -



The milder Stage 1 tunes are able to unlock some power while keeping intact, but you would want to be sure all those components are newer and good to handle the power, because they will fail at some point.



CBU is very rarely seen in the prevalence on the X5D's like it is on the 335D's, something I learned after research, as I was concerned as well - its because the X5's have an additional low pressure EGR, for some reason it doesnt get built up like the sedans with a HP EGR only. I talked to a couple guys recently and one had very minimal buildup in his intake manifold, head looked good, he was at 140k miles. However, some guys with the sedans if leaving the emissions equipment in place report needing full cleaning and walnut blasting of CBU as much as every 40-50k.


Again, if your wife does not want any soot, smoke, or smell, then leave it in place, and hopefully if any components fail they are covered by some sort of emissions warranty...


The CARB warranty is only for cars registered in CARB states, which I am not sure if Maryland is, again, another question for the SA. Also, some guys on the diesel FB group lately of BMW saying certain emissions components are not covered under warranty, yet BMW "goodwilled" the repair on the house. If you have an item that fails and they tell you its not covered under Federal Emissions warranty, get it in writing -


If you have your owners manual set, it should all be in there on the 2013 warranties applicable to your vehicle. Looks like the CARB warranty is much more helpful, since your state is listed.


https://xoutpost.com/1052272-post3.html


For someone like me, my wife doesn't mind some soot, smoke, or a little diesel smell (there are downpipes with a diesel oxidation catalyst 'DOC' which help cut the smell down a lot with the deletes, not remove completely, but at least 50-70% of it) - and we don't live in a CARB state where the warranty would apply long term, nor do we have diesel emissions testing, so yes, the logical thing to do is if a high dollar component fails, and BMW does not want to warranty the replacement, then at that time we will go full deletes and not deal with it. There are just so many components of the system added on for NA regulations, that can fail. The M57's in Europe for example do not deal with DEF or the SCR system, they just have a DPF and DOC since they were more concerned about CO2 than us here who were more concerned about NOX.

[Best4x4xFAR]

Originally Posted by Ricky Bobby

CBU is very rarely seen in the prevalence on the X5D's like it is on the 335D's, something I learned after research, as I was concerned as well - its because the X5's have an additional low pressure EGR, for some reason it doesnt get built up like the sedans with a HP EGR only. I talked to a couple guys recently and one had very minimal buildup in his intake manifold, head looked good, he was at 140k miles. However, some guys with the sedans if leaving the emissions equipment in place report needing full cleaning and walnut blasting of CBU as much as every 40-50k.

Oh, had recently seen this post, and got worried..

[Ricky Bobby]

California warranty reads on page 28 of the attached manual -



https://www.bmwusa.com/content/dam/b...1_X3_X5_X6.pdf

[Ricky Bobby]

You won't know until you pull it off - addition of low pressure EGR is one factor on the X5's thats different -



If the vehicle has driven short trips its whole life then yes you probably would see more CBU regardless - at the end of the day you won't know until you pull it off - the intake manifold can be ultrasonic cleaned but the valves should really be walnut blasted -


I'll have any carbon cleaned up when I do the deletes, swirl flaps deleted etc -


This is straight from the shop that is 20 mins from my house which does a LOT of diesel tuning and is one of the top tuners for the 335/X5/D


"The x5d's do not really have bad issues with CBU and when the intake is off it can just be wiped out, time and costs would depend on how badly it was once we had the intake manifold off."

[daytonatrbo]

The LP EGR valve is vacuum operated. The vacuum lines and pressure converters/VSVs are all known issues on this engine. You may be low on miles, but age and other factors play a role in the rubber vacuum lines deteriorating.

Its probably worth your time to remove the plastic cover, remove the airbox and visually inspect the vacuum lines for any signs of issues.

[Best4x4xFAR]

And it is back out again. Wondering if it is gunked up with CBU, seems like a lot of talk of CBU issues with these engines, and some pretty scary photos..

Originally Posted by daytonatrbo

The LP EGR valve is vacuum operated. The vacuum lines and pressure converters/VSVs are all known issues on this engine. You may be low on miles, but age and other factors play a role in the rubber vacuum lines deteriorating.

Its probably worth your time to remove the plastic cover, remove the airbox and visually inspect the vacuum lines for any signs of issues.

Good Point, will see if I can do that this weekend..

Also found an interesting method of 'disabling' EGR operation. Of course you still have to live with the check engine light, or have it coded out, but looks like posters are reporting better MPG and smoother running..

[AlpineX]

Originally Posted by Best4x4xFAR

And it is back out again. Wondering if it is gunked up with CBU, seems like a lot of talk of CBU issues with these engines, and some pretty scary photos..





Good Point, will see if I can do that this weekend..

Also found an interesting method of 'disabling' EGR operation. Of course you still have to live with the check engine light, or have it coded out, but looks like posters are reporting better MPG and smoother running..

That looks to me like an EGR valve produced prior to 2010... later models got a newer version

[Best4x4xFAR]

So the Check engine light had gone out for some time, but came back a week or so ago..

Doesn't appear to be going away this time..

Did my first oil change on the car since purchase..

When I pulled the acoustic cover off the top of the engine, I noticed oil around the EGR valve area, thoughts?

Going to guess it may be related to the issue, was hoping someone may have experienced this and know the cause?

[josiahg52]

Yeah, it could be a major problem. Could be oil spillage during filling or oil dripping from the used oil filter during the filter change.