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2010 2011 BMW 5 Series Forum F10 BMW 5-Series (F10) Forums General 5-Series Sedan and Wagon (F10 / F11) Forum 801a4c bmw fault code
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      08-31-2023, 05:30 PM   #1
Devosent
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801a4c bmw fault code

Hello everyone I was wondering if anyone had the issue with the following code
801a4c SINE: Undervoltage Detected in internal voltage supply. I replaced my battery 2 years ago so I know it shouldn't be a battery issue, Does anyone else know what it could be?

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      09-01-2023, 07:54 AM   #2
Trian
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I have very little to offer other than comfort access door handles, for some, tend to cause electrical issues when they go bad. If you have them you might consider disconnecting one at a time and see if code changes/disappears.
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      09-01-2023, 10:04 AM   #3
Devosent
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Quote:
Originally Posted by Trian View Post
I have very little to offer other than comfort access door handles, for some, tend to cause electrical issues when they go bad. If you have them you might consider disconnecting one at a time and see if code changes/disappears.
The classic, I know which door handle it is and I have been getting door handle issues lately, my far right one actually went out a few weeks ago so I'll shop around Aliexpress for a new one.

Thank you, I forgot how the comfort access handles can be a pain
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