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If everything else is working properly in the vehicle except the fuel gauge this is usually a fault with the fuel level sensor itself needing replaced.I have seen the fuel level sensor cause this type of fault here before and had to replace it.It is located inside the fuel tank and can cost up around $500 or more to have replaced.If there are any other issues with the fuel gauge issue here let me know as this may be another component at fault.
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If your vehicle is still under factory warranty which it may be since it is a 2012 model then it would be covered under warranty for diagnosis and repair at no charge to you.You can contact a dealer with your vehicles VIN number from the dash and they can usually tell you over the phone if you are still under warranty with your particular model.
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The noise can be a fault with sway bar links as these are most common or the sway bar bushings.I have in some cases seen shock failure as well needing replaced.This should all be covered under warranty to be diagnosed and repaired.
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In some cases it can tell when the code set but I dont think this is the case for this code here.The scan tool or dealers sds machine will be able to show this next to the code or code history list if it shows when the code had failed/set.