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Discussion Starter #1
2012 Ltd. Recently noticed.....

Idle indication seems normal.
I do not get over 2300 RPM at ANY speed up to 100 mph.
I can stand on the accelerator in neutral and "might" get 3000 RPM.

Threw an code of "High or Low voltage from main power supply".

Not sure what to make. Operation of the vehicle is normal in all other respects.
Well maintained 41000 original miles. I
 

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Suggest checking to make certain that the battery terminal and cable connections are clean and tight, and if so then also the positive battery cable connection to the starter relay and also that the battery cable ground connection is secure. If those connections aren't good and secure that can result in strange engine behavior and other problems. Even if the vehicle starts with no difficulty there may still be intermittent electrical current supply through those connections.
 
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