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C2100 code from scan tool.

 
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  • 1 Post By ptcruisersteve
  • 5 Post By Lew360
  • 1 Post By Fk5

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Old 12 Jun 2019, 07:06 pm
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Default C2100 code from scan tool.

I had a miss fire on cylinder 2 and 3. I swapped some fuses in the fuse box. I also installed a Diablo Trinty 2. I went back to the stock tune but I can't tell which caused the problem and I don't know how to fix it. I'm getting the C2100 code, low battery voltage. Any ideas where to start?

I did fix the miss fire, it was a bad coil. New coil, wires, plugs and valve cover gasket.
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Old 13 Jun 2019, 07:13 am
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Default Re: C2100 code from scan tool.

You answered your own question, it would appear. As for the low voltage in the battery, take it to your local parts store and ask them to LOAD TEST it. You might have a dead cell. Or you could have simply run it down while chasing the misfire problem.
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Old 15 Jun 2019, 02:37 pm
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Default Re: C2100 code from scan tool.

I changed the battery and I'm still getting the code. Anyone have any other ideas? I have searched this and I can't find a solution, the threads always die without anyone figuring it out. I'm kinda lost here.
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Old 16 Jun 2019, 12:07 am
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Default Re: C2100 code from scan tool.

Quote:
Originally Posted by Lew360 View Post
I changed the battery and I'm still getting the code. Anyone have any other ideas? I have searched this and I can't find a solution, the threads always die without anyone figuring it out. I'm kinda lost here.
Code C2100
Causes:
ECM / PCM
Vehicle battery / Charging System
Auto lock brake module - check the voltage going to the module.

You might have an ABS intermittent condition.
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Last edited by ptcruisersteve; 16 Jun 2019 at 12:11 am.
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Old 25 Jun 2019, 05:28 pm
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Default Re: C2100 code from scan tool.

So apparently I swapped the abs fuse 34 ABS valve feed into a spot 29 which is empty. Put the fuse back in the correct place and all is well. Pays to double check what you are doing. Thanks for the help and replies.
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Old 26 Jun 2019, 09:35 am
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Default Re: C2100 code from scan tool.

Quote:
Originally Posted by Lew360 View Post
So apparently I swapped the abs fuse 34 ABS valve feed into a spot 29 which is empty. Put the fuse back in the correct place and all is well. Pays to double check what you are doing. Thanks for the help and replies.
Glad you found it and thank you for coming back to report. Too often we fail to learn of the solution.
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