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      07-08-2019, 12:33 AM   #1
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Check engine

Got a check engine light and it's bugging the hell out of me. Quick back story to help possibly troubleshoot this issue. The car is a 2014 F31 328d Xdrive. So I bought this car October 2018 at 50,000 miles from BMW Houston and shipped here to me. I live in Palm Springs where the environment is dry, hot and dusty. I had no issues until January when I got a "Low Coolant Warning" and just filled it up and went a long. A month later it popped up again and filled it up again. I haven't had an issue since. Until this past May...

I got the car back from the body shop after my wife had run over a tire and tore the front bumper and rear diffuser. Roughly 3.5 weeks after getting it back from the body shop the "Check Engine Light" came on. I cleared codes but still decided to take it to BMW Palm Springs. They said since I cleared it they couldn't trace the codes and to come back when it returns. Well that's where I'm at. It came back 2 days ago, I tried clearing them and it came back after a few miles. There were a few codes but one that I noticed that was consistent at all times before and after clearing was this one below, 2BB300 Particle Sensor. The car is now at 66,000 miles. Any hints or insight is appreciated. Sorry for the long post.

- Tim
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      07-08-2019, 01:39 AM   #2
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Particulate Matter Sensor extended coverage applies to some vehicles. Go to www bmw-rp dot com and enter your vin to see. The part is not very expensive and at least on the x5 very accessible. There is an original and updated part, updated shown by hash marks on the sensor nut.
This may affect your dpf regeneration, so I'd get it taken care of asap.

On another note, your low coolant is possibly a sign of your egr cooler falling.

Last edited by AlpineX; 07-08-2019 at 01:55 AM..
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      07-08-2019, 03:48 AM   #3
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Particulate Matter Sensor extended coverage applies to some vehicles. Go to www bmw-rp dot com and enter your vin to see. The part is not very expensive and at least on the x5 very accessible. There is an original and updated part, updated shown by hash marks on the sensor nut.
This may affect your dpf regeneration, so I'd get it taken care of asap.

On another note, your low coolant is possibly a sign of your egr cooler falling.
Thanks for the info! I'm going to try and bring this to the dealership and have them cover the cost. I went on BMW-rp, looked up the VIN and found that mine is under the reimbursement program. So will this be covered or will I need to go elsewhere first then get money back? And is the code I stated show failure of the sensor or just a malfunction?

And yes you're right about the EGR. I went to the dealership and they didn't have a fix yet. But I believe they do now.
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      07-08-2019, 09:07 AM   #4
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They will contract you to standard diagnostic fees, but then senf the bill to the manufacturer only after it is confirmed that's what your trouble is.
Normally once this type of extension is offered, you are not eligible for reimbursements if performed elsewhere.
An increasing frequency electrical malfunction pointing to that sensor is generally going to be covered as a failure of the sensor.
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      07-08-2019, 11:04 AM   #5
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I think they will definitely cover the sensor for that fault. Don't clear faults!
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      07-08-2019, 12:14 PM   #6
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Originally Posted by Enabled View Post
I think they will definitely cover the sensor for that fault. Don't clear faults!
Quote:
Originally Posted by AlpineX View Post
They will contract you to standard diagnostic fees, but then senf the bill to the manufacturer only after it is confirmed that's what your trouble is.
Normally once this type of extension is offered, you are not eligible for reimbursements if performed elsewhere.
An increasing frequency electrical malfunction pointing to that sensor is generally going to be covered as a failure of the sensor.
Quote:
Originally Posted by Enabled View Post
I think they will definitely cover the sensor for that fault. Don't clear faults!
Thanks again guys! I'm at the dealership now awaiting what they say. I appreciate the help!
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      07-08-2019, 03:48 PM   #7
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Still here at the dealer. They said it was a bad Particle Sensor and it's covered under extended warranty but also came back to say SCR is failing as well. Does anyone know if it's part of the emissions extended warranty? She is checking right now.
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      07-08-2019, 04:16 PM   #8
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If it's the NOx sensors then they are covered.
SCR failing is too unspecific.
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      07-08-2019, 04:42 PM   #9
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Quote:
Originally Posted by Enabled View Post
If it's the NOx sensors then they are covered.
SCR failing is too unspecific.
Quote:
Originally Posted by Enabled View Post
If it's the NOx sensors then they are covered.
SCR failing is too unspecific.
Thanks Enabled! I just got home so it was
Particle Sensor and the SCR pump that was failing. They're all covered under emissions warranty! They're also taking care of the EGR recall as well and it should all be completed by Thursday. Thanks again for your guys help
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      07-08-2019, 06:17 PM   #10
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The SCR transfer pump? The one that actively pumps DEF from one tank to another?
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      07-08-2019, 06:51 PM   #11
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The SCR transfer pump? The one that actively pumps DEF from one tank to another?
Yup exactly it. Apparently it showed that it was intermittently working and was showing signs of failure. Now I remember that was one of the codes I pulled but it it wasn't always consistent on my code reader.
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      07-12-2019, 07:12 PM   #12
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Quote:
Originally Posted by AlpineX View Post
They will contract you to standard diagnostic fees, but then senf the bill to the manufacturer only after it is confirmed that's what your trouble is.
Normally once this type of extension is offered, you are not eligible for reimbursements if performed elsewhere.
An increasing frequency electrical malfunction pointing to that sensor is generally going to be covered as a failure of the sensor.
Quote:
Originally Posted by Enabled View Post
The SCR transfer pump? The one that actively pumps DEF from one tank to another?
Just got the car back from the dealership and everything is running great. They had to wait for a few parts to come in but so far so good. EGR is on backorder and they also mentioned intake needed to be replaced too? Is that part of the EGR issue? Luckily all is covered once parts come in. Thanks for the help!
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      07-12-2019, 07:24 PM   #13
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Yea, they're automatically replacing intake manifolds on cars with the egr cooler replacement, simply because there was the risk of a very faulty cooler keeping exhaust air hot and feeding it into intake, where it could melt it.

It seems instead of letting the techs make that call, they're just replacing all the intakes.
Their original wording never said it would be that thorough. No complaining here.
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      07-13-2019, 10:59 AM   #14
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Yea, they're automatically replacing intake manifolds on cars with the egr cooler replacement, simply because there was the risk of a very faulty cooler keeping exhaust air hot and feeding it into intake, where it could melt it.

It seems instead of letting the techs make that call, they're just replacing all the intakes.
Their original wording never said it would be that thorough. No complaining here.
Exactly my thought. I'm not complaining. Whatever it takes.
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