# Code 51

**URL:** https://community.electricforum.com/t/code-51/6130
**Category:** GEM Forum
**Created:** [June 14, 2016, 12:47pm UTC](https://community.electricforum.com/t/code-51/6130 "2016-06-14T12:47:21Z")
**Posts on this page:** 8
**Page:** 1

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### Author: ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)
#### Post date: [June 14, 2016, 12:47pm UTC](https://community.electricforum.com/t/code-51/6130/1 "2016-06-14T12:47:21Z")

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Just put a new set of Deka AGM BATTERIES in her and when I turn the key on Code 51 poped up on the dash. I had 12 volts in each battery. I have her plugged in now, and I hope that will help me out. And if not, any help would be appreciated. Thanks Al

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### Author: ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 14, 2016, 1:10pm UTC](https://community.electricforum.com/t/code-51/6130/2 "2016-06-14T13:10:13Z")

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Check total volts.  
One battery in backwards?

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### Author: ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)
#### Post date: [June 16, 2016, 9:16am UTC](https://community.electricforum.com/t/code-51/6130/3 "2016-06-16T09:16:13Z")

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[quote=Inwo;31263]Check total volts.  
One battery in backwards?[/quote]

I had the batteries installed by a professional. I also down loaded the battery diagram for the gem 72 volt carts the batteries are in properly. My next step is going to check the voltage at the controller. I will update soon.

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### Author: ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 16, 2016, 9:27am UTC](https://community.electricforum.com/t/code-51/6130/4 "2016-06-16T09:27:43Z")

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You won’t have voltage at controller until relay pulls in.  
Check from plus to minus. First battery to last.

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<div class="post-metadata">

### Author: ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)
#### Post date: [June 16, 2016, 9:31am UTC](https://community.electricforum.com/t/code-51/6130/5 "2016-06-16T09:31:04Z")

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[quote=Inwo;31291]You won’t have voltage at controller until relay pulls in.  
Check from plus to minus. First battery to last.[/quote]

Ok doing that in a couple of minutes

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<div class="post-metadata">

### Author: ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)
#### Post date: [June 16, 2016, 9:48am UTC](https://community.electricforum.com/t/code-51/6130/6 "2016-06-16T09:48:16Z")

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> [@Als gem cart;31292](#):
>
> Ok doing that in a couple of minutes

I have 75 volts at the batteries

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<div class="post-metadata">

### Author: ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 16, 2016, 2:32pm UTC](https://community.electricforum.com/t/code-51/6130/7 "2016-06-16T14:32:44Z")

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The trouble tree asks to check control fuse.

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<div class="post-metadata">

### Author: ![Als\_gem\_cart](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Als\_gem\_cart](https://community.electricforum.com/u/Als_gem_cart)
#### Post date: [June 16, 2016, 2:35pm UTC](https://community.electricforum.com/t/code-51/6130/8 "2016-06-16T14:35:10Z")

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> [@Inwo;31294](#):
>
> The trouble tree asks to check control fuse.

Is that fuse located on or near the controller