[simon]

Hello,
I scan my car and get this code with no apparent side effects. After my car sits for a few days the battery always struggles to start it up and after one start it always starts quickly and easily. It's a fairly new battery so I figure I might as well replace IBS as that may be a factor.

Regardless, I get a new IBS from the dealership. The new part is updated and looks a bit different. Requires an adaptor harness to fit. I install everything, clear codes and run a full scan again and come up with the same error code: 2E8E.

After replacing the IBS itself, anyone have any idea on what could be causing this? By the way, don't lose the nut for the negative battery cable.

http://www.e90post.com/forums/showthread.php?t=1270739


Thanks,
Simon

[matteblue3er]

There is most likely something wrong with the BSD line going to the alternator/DME. The Bit Serial Data line is the comm line used for communication between the DME, alternator, and IBS sensor.

Check to make sure there are no shorts along that line.

[simon]

Thank you for the tip! Is small blue connector with two wires running back? Or the larger connector that goes in the (what I think is the) battery safety terminal?

Simon

[matteblue3er]

It's the 2-wire harness. The larger connector going to the battery distribution panel powers the IBS sensor.

[simon]

Excellent. Thanks for the tips. It's hot as hell in here Atlanta lately, when/if it cools down a bit I'll take a look at it.

Simon