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Discussion Starter · #1 ·
I was hoping to get some help with a code. I am getting a C code A4. The left side of my instrument cluster, which includes my tach, fuel gauge and volt meter are not working. My reverse lights also do not work, which I'm sure is not related if anyone has any input on that. The truck is an 04, diesel, 6 speed. The check engine light is not on. Thanks for any help in advance.
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2017 Ram 2500 SLT 4x4
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Do the key on off code check and see if the same.
 

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Discussion Starter · #4 ·
Thanks Jim. I actually pulled the code by holding the trip button down while turning the key to the on position. I did not use an obd reader.
 

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Discussion Starter · #5 ·
So I was able to figure out from another forum that "C-A4 is Ignition run/start circuit rationality check". Can anyone put this into laymen's words for me? Is it a big deal and how do I fix it? Thanks in advance.
 
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