The oil pressure sender is located on the engine above the oil filter. It is directly on the block and is slightly below and to the rear of the fuel pump. If you are standing in front of the engine, looking just above the oil filter you should see the wire going to it. If you find it is bad, it is a very simple fix and you should be able to do it in just a few minutes.
You will find the diagrams on page 12 of your owners manual...here
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