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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Please help! Codes 2DED and 2E97



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      07-15-2016, 11:48 AM   #1
robsta813
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Please help! Codes 2DED and 2E97

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On my way in to work this morning, I experienced the following codes (2DED: Power Management and 2E97: Generator) and Shadow Codes: 2FCA and 2FDA shown through my MHD tablet. Car is FBO 09 E92 335i. Currently running MHD E40 latest version.

Battery was replaced and programmed 2 months ago. The car continued driving, however the "Battery Terminal" light came on and the steering wheel became instantly tough while trying to turn. Luckily I was only a minute out from work when this happened, however as I pulled inside the parking lot, I had to manually turn the steering wheel with great effort to park and it was extremely difficult to maneuver. It seemed as if though there was a "complete loss" of power steering.

I am hoping someone is able to help provide some insight or direction as to what this may be. Serpentine belt slipping off the alternator? Loose connection in the fuse box? Alternator itself?

Thanks to everyone in advance for your input!

Last edited by robsta813; 07-15-2016 at 02:26 PM.
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      07-15-2016, 04:57 PM   #2
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One thing that power steering and alternators have in common is that they share the same accessory drive belt.

That's pretty much all they have in common.

I don't know for sure, but I think there is an E9X model that had an issue with the belt contacting the subframe. And there is also the issue of a shredded belt getting sucked into the engine and doing really bad stuff. So if your belt is slipping/shredding proceed with caution! If I saw it heavily frayed (to the point of it slipping) I'd be temped to tow or remove it before driving. The belt can do a lot of damage.
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      07-15-2016, 09:33 PM   #3
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How did you resolve it?

It's a good idea to post the resolution instead of deleting the thread so others can benefit from what you found.
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      07-15-2016, 10:16 PM   #4
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Glad you got this sorted out. Please share the solution for future reference.
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      07-18-2016, 10:36 AM   #5
robsta813
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Update: Yes, as you guys had suggested, the power steering and alternator are tied together via the serpentine belt, which was shredded into confetti. I was not able to drive it whatsoever and had to get it towed to my indy. Apparently the belt tensioner locked and the serpentine belt was ripped to pieces.

Quick and simple fix with new belt tensioner and serpentine belt.

Thanks for the feedback guys!
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      07-18-2016, 01:07 PM   #6
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Quote:
Originally Posted by robsta813 View Post
Update: Yes, as you guys had suggested, the power steering and alternator are tied together via the serpentine belt, which was shredded into confetti. I was not able to drive it whatsoever and had to get it towed to my indy. Apparently the belt tensioner locked and the serpentine belt was ripped to pieces.

Quick and simple fix with new belt tensioner and serpentine belt.

Thanks for the feedback guys!
Yes, someone on this forum posted a vid of this happening, was quite scary to watch judging by the horrendous sound it made when it let go! So if you ever hear a squeaking belt tensioner, have it replaced sooner rather than later!!
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