Diesel CEL Questions

I have searched thru many posts on this forum and X Outpost about the X5D, thankfully on mine ( have approx 2000 miles ) no issues, it appears that many of the issues
concerning emission related faults have creeped up in the 9-10k mile range, I do realize that the CEL can have many related issues , my questions are as follows :

1. Many of the faults seem to be related to the EGR and Temp sensors, is this due
to " sensitive" BMW software that throws a fault at the slightest deviation from norm ?
2. Could it be related to the driving style ( short trips, no highway runs ) ?
3. Is the EGR issue related to carbon buildup hence, the 9-10k issue ?
4. Has these issues been resolved with later builds and if so if anyone knows the
build dates ?
5. Are these issues in the minority as threads are started by mainly owners with issues.
6. Also, do direct injection diesel motors suffer from carbon buildup as gas direct
engines do ?
I would appreciate any responses from longer term diesel owners and the more experienced board members, I might be a little bit paranoid but in no way am I having
any buyers remorse, I am absolutely extremely satisfied.

In short - yes, you're paranoid. And no, there's no carbon buildup in diesel engines.

Originally Posted by ductman

1. Many of the faults seem to be related to the EGR and Temp sensors, is this due
to " sensitive" BMW software that throws a fault at the slightest deviation from norm ?

Precisely my belief. Although calling it 'sensitive' is gracious...I'd say poorly engineered and executed.

I say this having lifed through multiple pathces, EGR repairs, 60 days in the shop, a lemon and thousands of posts read on the subject.

Originally Posted by ductman

2. Could it be related to the driving style ( short trips, no highway runs ) ?

Not in my opinion, but really no data to speak of...

Originally Posted by ductman

3. Is the EGR issue related to carbon buildup hence, the 9-10k issue ?

I don't think so, it seems to be variable- some had it at 200 miles.

Originally Posted by ductman

4. Has these issues been resolved with later builds and if so if anyone knows the
build dates ?

I think it was resolved, and IS BEING resolved by virtue of software roll outs, upgrades and the recall of the 2010s.

Originally Posted by ductman

5. Are these issues in the minority as threads are started by mainly owners with issues.

Yes.

Originally Posted by ductman

6. Also, do direct injection diesel motors suffer from carbon buildup as gas direct
engines do ?

Don't think so.