P0611 Code, Need advice!

[Trbotime]

My truck is having some starting issues when cold so I decided to check and see if I had any codes and I found a P0611, FICM code. I have been reading up on it and found that weak batteries could cause FICM failure, so I went out and checked my batteries. I found that my driver side battery, when I look in the eyelet is red and the passenger side is green. So I have a bad battery. Batteries are stock so over 4 years old.

I'm still under 5 year / 50k mile warranty, I only have 31k on the truck. What should I do? I have an appointment to take it into the dealer, but am hesitant now that I found out I have a bad battery.

Should I replace that one bad battery and take it in for the code, replace them both and take it in, or just take the truck in the way it is?

I don't want to take it into the dealer and have them say that because I have a bad battery that caused the FICM to go bad and not cover it.

Any advice would be great.

[scotty2280]

that is the death code for the ficm, i needs to be replaced. i would just bring it in.

[shu873]

It is the death code, but there is a small chance it's just your bad battery. You need to pull them both and have them load tested. NAPA or any other auto parts store can do it for you. If you replace them, always replace both batteries at the same time, even if one is good. Reset your DTC's and see if the problems persist. If they do then take it in and get the FICM replaced. That's my opinion.

[Trbotime]

I've heard you need to replace them both even if one is bad, so I'll look into that.

I just don't want to wait to long and screw something else up!

[Trbotime]

So should I take it in to the dealer or get new batteries then go?

I'm supposed to take it in this after noon, so please advise!

[mudrunninpig]

Originally Posted by Trbotime

I've heard you need to replace them both even if one is bad, so I'll look into that.

I just don't want to wait to long and screw something else up!

yes you should replace both batteries at the same time. If one is bad the other has been doing all the work. chances are the other will take a crap soon.

[Trbotime]

Originally Posted by mudrunninpig

yes you should replace both batteries at the same time. If one is bad the other has been doing all the work. chances are the other will take a crap soon.

Should I take it in for the P0611 code now or change the batteries then go? Will having a bad battery make a difference?

[AFBLUE]

Sorry for the highjack. I would replace the batteries and then take it in under warranty. The batteries are the only thing that warranty wouldnt cover, and let the dealer worry about the rest.

I myself just went to a local diesel tech and he pulled a P0611 code too. So the FICM on my is on its way out too. Does anyone know if this is the fault that comes up when the solder joints crack? and can anyone link to the thread on how to fix the solder joints?

[Trbotime]

Originally Posted by AFBLUE

Sorry for the highjack. I would replace the batteries and then take it in under warranty. The batteries are the only thing that warranty wouldnt cover, and let the dealer worry about the rest.

I myself just went to a local diesel tech and he pulled a P0611 code too. So the FICM on my is on its way out too. Does anyone know if this is the fault that comes up when the solder joints crack? and can anyone link to the thread on how to fix the solder joints?

What are they doing about your FICM since the P0611 code was found. What did they say?

[mudrunninpig]

If it was me? I would replace the batteries as Kurt suggested, clear the code and see if it comes back. If it does, the warranty will replace the FICM