Battery current sensor?

Tiny
CSEGER56
  • MEMBER
  • 2020 BUICK ENCORE
  • 1.3L
  • 3 CYL
  • TURBO
  • 4WD
  • AUTOMATIC
  • 77,650 MILES
I have a battery current sensor that I unplugged but it won't reconnect now it has a check engine light on and says lost communication with battery sensor module but there's no corrosion or damage and nothing is wrong with the sensor what am I missing cause my scanner says bms relearn is unnecessary.
Sunday, April 13th, 2025 AT 6:11 PM

7 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,582 POSTS
You will need to reconnect the battery currant sensor and then you may need to do the battery monitor reset as well. Here is a video to help if you need it, after the battery sensor is reconnected clear the codes.

https://www.youtube.com/watch?v=ETNv2S_idIU

Here are the instructions you need. Check out the images (below). Please upload pictures or videos.

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Monday, April 14th, 2025 AT 12:06 PM
Tiny
CSEGER56
  • MEMBER
  • 4 POSTS
It won't reconnect.
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Monday, April 14th, 2025 AT 6:39 PM
Tiny
KEN L
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  • 51,582 POSTS
Why not, can you upload images?
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Tuesday, April 15th, 2025 AT 9:27 AM
Tiny
CSEGER56
  • MEMBER
  • 4 POSTS
It ended up being a bad pigtail connector.
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Tuesday, April 15th, 2025 AT 3:45 PM
Tiny
KEN L
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  • 51,582 POSTS
Did it fall apart and is this why you could not get it back together?
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Thursday, April 17th, 2025 AT 8:47 AM
Tiny
CSEGER56
  • MEMBER
  • 4 POSTS
The clip that locked it in place wasn't holding it anymore that's what the shop I took it to told me.
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Thursday, April 17th, 2025 AT 11:01 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,582 POSTS
Thanks for letting us know, we are here to help, please use 2CarPros anytime.
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Saturday, April 19th, 2025 AT 9:07 AM

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