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codesx's Avatar
codesx codesx is offline
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Join Date: Feb 2018
Car: 2008 335i Vert (E93, N54)
Default Codes 2E8B, 2DEB, Open to thoughts - 07-05-2019, 09:53 AM

Hi all,

The last couple days have been hotter here at approx 90f.
Also, for two days now (never prior) I'm getting the following codes;
2E8B Intelligent battery sensory, signal (yesterday and today)
2DEB Power management, vehicle wiring system control (today)

After clearing, they return.
Car appears to fun fine, with no impact to anything I can perceive.

I'm focused on the IBS or battery itself.
I suggest IBS as I've had the battery cover off for some time as I was playing with Injectors, etc. (removing negative)

The car always turns over fast, even if it takes a while (leaking injectors at times). Still, all research suggests the battery can still become problematic prior to showing personal symptoms or showing as bad during a capacity test.

Some information even suggests the DME is too hot, however I find 90f dubious in this regard.

I'm very open to your collective thoughts!
Thanks as always!




2008 335i Convertible, E93, N54, A/T (200,000+ km)
Wheels: 322 | Tires: R.275/35r18, F.245/40r18
TUNE: JB4/Trebila | 24 PSI | 100% Meth via dual CM5 | 94 Octane
BMS: JB4, Map 6 | WMI | 5" FMIC | OCC | DCI | Cowel Filters
RB: Inlets | PCV Valve
VRSF: DiPis | CP
HKS BOV
xHP Stage 3
NGK-97506 @ .020

Maintenance:
2018 - A/T Replaced | Ign Coils | Walnut Blast
2019 - Index 12 Injectors | VCG | OFHG & O-rings | TStat
2020 - OPG | Battery | IBS | Water Pump | Plugs | Alternator
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THE BEAST's Avatar
THE BEAST THE BEAST is offline
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Car: 2008 E93
Default 07-05-2019, 03:58 PM

I vote for IBS.
I have had low battery warnings on a bad battery, but never those codes so.....
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Dave @ BMS/Fuel-It!'s Avatar
Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
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Posts: 7,879
Join Date: Apr 2014
Car: E92 335XI
Default 07-06-2019, 02:18 PM

Id assume IBS too


Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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codesx's Avatar
codesx codesx is offline
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Posts: 932
Join Date: Feb 2018
Car: 2008 335i Vert (E93, N54)
Default 07-09-2019, 09:34 AM

Thanks. I've reset all related connectors and it hasn't come back for 2+ days now.
Will keep an eye. If it happens again, I'll start with the IBS and report back.




2008 335i Convertible, E93, N54, A/T (200,000+ km)
Wheels: 322 | Tires: R.275/35r18, F.245/40r18
TUNE: JB4/Trebila | 24 PSI | 100% Meth via dual CM5 | 94 Octane
BMS: JB4, Map 6 | WMI | 5" FMIC | OCC | DCI | Cowel Filters
RB: Inlets | PCV Valve
VRSF: DiPis | CP
HKS BOV
xHP Stage 3
NGK-97506 @ .020

Maintenance:
2018 - A/T Replaced | Ign Coils | Walnut Blast
2019 - Index 12 Injectors | VCG | OFHG & O-rings | TStat
2020 - OPG | Battery | IBS | Water Pump | Plugs | Alternator
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Dave @ BMS/Fuel-It!'s Avatar
Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
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Posts: 7,879
Join Date: Apr 2014
Car: E92 335XI
Default 07-09-2019, 09:11 PM

Quote:
Originally Posted by codesx
Thanks. I've reset all related connectors and it hasn't come back for 2+ days now.
Will keep an eye. If it happens again, I'll start with the IBS and report back.
Fingers crossed!

Enjoy your week


Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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