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

Okay, new E70 35d owner..
Purchased last month with 55,xxx miles..
Has about 58,xxx miles on it now

About a week ago wife called saying the check engine light was on..
Two days later it was out (hadn't had a chance to go get the code read)..

Yesterday its back on..
Had the code read this morning..

P045F - "Exhaust Gas Recirculation "B" Control Stuck Closed"

Searched forum, but I can't seem to get anything to come up under the code, the description, EGR is 'too common' to search..

So obviously the Car is our of Factory Warranty..
Not sure if this would be covered under the factory extended emissions Warranty?

Any feedback/suggestions? :dunno:

There should be a federal 8y/80k emissions warranty - Why don't you call your local dealer or bring it to them and tell them if its not covered under warranty you'll handle it yourself


No CPO either?

No CPO Warranty, bought from third party dealer. Dealer wants $160 diagnostic fee if no work is done, so would prefer to avoid that if it is not covered, particularly is it is an easy DIY (hoping)..

Are they not able to tell you if emissions components related to the EGR system are covered under emissions warranty?


There are so many components it is almost impossible to troubleshoot the emissions system without dealer software, and even then a lot of times they throw parts at it - it should be easy to explain to a service advisor that you are throwing codes for the EGR system, its not a glow plug for example. Alternatively, find a good independent BMW diesel mechanic/shop. However, P codes tell next to nothing and you really need to run dealer level troubleshooting software (ISTA+P? I believe) as they will have test plans for the codes thrown in order to pinpoint the failing component. The EGR at the front of the engine and the EGR cooler is easy to get to if those components are failing, but again, throwing parts at it is a crap shoot - and emissions components are NOT inexpensive.


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..

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.

California warranty reads on page 28 of the attached manual -



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

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

https://i.imgur.com/AkJOexkl.jpg
https://i.imgur.com/71hfQT7l.jpg
https://i.imgur.com/pBm7y7fl.jpg

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."

God this is bad advice...and I see it ALL THE TIME

There is a federal 8/80 warranty on THREE PARTS: DDE, CAT, OBD computer. (As I recall, read your manual)

SO many people blithely claim 'there an emsissions warrant, it's covered'.... Dealers are happy to collect $160 knowing FULL WELL it is not going to be covered.

Follow rickyboobys advice and you will piss away $$$$, They will take $160, then list $thousands of parts to replace and you will be no closer to REALLY knowing your issue.

Having said that, BMW has multiple parts warranties for some parts. Depends on what is wrong with your car.

Oh, don't bother 'wiping out' the 'carbon build up'.... Your issue is almost surely not that.