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  #1  
Old 08-23-2014, 04:35 PM
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2B72 Variable Intake System, temperature warning threshold

Does anyone have any experience with this code? It does not trigger a check engine light. Im experiencing a rough acceleration on throttle, as soon as i release the throttle the vibration stops. This code popped up this morning, after clearing it the engine is running fine.

Some background, I was experiencing this same rough acceleration about 6 months ago. After pulling the codes it came up as misfire on multiple cylinders. I cleared the code out and the vehicle ran fine for a few months. No codes were popping up, but the rough accleration returned. I replaced the coil packs and spark plugs. Rough acceleration did not improve. Then a couple months later I pulled the code and "2EF4" Thermostat fault came up. I changed the thermostat and cleared the code. The engine was running fine for about a month and the rough acceleration returned, again with no codes present. This morning I get the "2B72". Not much info found when I searched, I cleared the code out for now, vehicle is running fine again.

Any help would be appreciated
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Old 09-01-2014, 11:26 PM
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Old 09-02-2014, 08:51 AM
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I know on my chevy's they have a intake air temp sensor on them... wonder if our N62's do too?
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Old 09-02-2014, 09:46 AM
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Rough acceleration is coming back..
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Old 09-03-2014, 11:38 AM
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Been researching online and DISA keeps coming up. Could it be I'm having problems with that?
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Old 09-14-2014, 03:42 AM
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Old 09-14-2014, 07:55 AM
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Edit: never mind my suggestions below. After searching for info for the last 20 minutes...I started seeing threads where you asked about this issue back in July/2014 (http://www.xoutpost.com/1002043-post8.html). Kind of wish you had made this fact a bit more pronounced that you had been searching for this issue for awhile...I assumed this was a new issue for you and not something you've already been asking/searching info for.

Good luck...and if you get a resolution...please post back with your outcome in a new thread so that anyone else that may have the same issue will have some recourse or path to follow as well as to find doing a search.

Ignore below:
Here's some similar threads started by BMW owners with N62 engines that got the same code. And you may want to find out more about this BMW service bulletin (SIB 12 15 05). You may need to check with your local BMW dealership to have them print it out...of maybe a google search (type BMW SIB 12 15 05) to see if someone online has printed it out already:
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Old 09-15-2014, 12:25 PM
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Quote:
Originally Posted by itscoo2pyopants View Post
Been researching online and DISA keeps coming up. Could it be I'm having problems with that?
V8's don't have DISA.
Dump the Peake and plug in the GT1, then start running some tests. Or INPA. It might point you in the right direction.
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Old 09-18-2014, 11:13 PM
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after driving for 2 weeks with the rough acceleration, "2DB4 interface MFL" popped up this afternoon in INPA. Anyone have any experience with this code?

symptoms are the same but different codes seem to be popping up. I tried to do some research and run some tests in DIS and INPA, nothing conclusive. Also not much information online. Again, i cleared the code out and the vehicle is running back to normal.

any help would be appreciated
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Old 09-19-2014, 08:41 AM
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I think it has to do with the radio system in our e53's

MFL Interface Signal Error Code - BMW M5 Forum and M6 Forums

maybe bad connection or something?
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