I have heard of this problem on a number of vehicles. (None of which I have owned or worked on) My understanding is a soldered connection comes apart or was not solid. Many times it shows up with burn marks because the connection did not fail all at once it took some time. Partial or poor connections may burn leaving a mark.

If you send it out likely that is what a repair tech is looking for. Then they will do the repair making that connection very solid. Look for a warranty of some duration before choosing.

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Before doing any repairs, pull codes from the engine control system. It is possible there is a non-cluster issue as well. If you do not have a scanner, most fast moving parts stores will do this for free.

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Thanks Action,
I’m curious if the solder repair is do-able with special tools... probably worth having it done by a good repair shop.
I did have the codes checked recently at an auto parts store for an unrelated issue (went into limp mode with the wrench icon illuminated. I’m thinking its the throttle body recall issue, but thats a subject for a separate thread).
Anyhoo, there weren't any saved codes.
I’ll keep researching the repair option and compare warranties.
Thank you!

 

The wrench is the fly by wire throttle body and electronic accelerator pedal.

I suck at soldering. Is it doable? The answer is yes, by some one that has far better skills at soldering than I do. I can't figure why there is a L in solder, much less how to actually solder two pieces of metal together.

As Callahan said,

A man's got to know his limitations. When it comes to soldering and painting panels, I contract that out.

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