Hello and thank you for using Just answer! I'm Billy and i will assist you with this. Feel free to ask if you need any further info.
First here is how the system works:
The IPC (instrument panel)displays the engine oil pressure as determined by the PCM(powertrain control module). The IPC receives a class 2 message from the PCM indicating the engine oilpressure. The engine oil pressure gage defaults to 0 kPA (0 psi) or below if:- The PCM detects a malfunction in the engine oil pressure sensor circuit.- The IPC detects a loss of class 2 communications with the PCM.
You will notice that overpressure is not indicated (as not normally possible).....
However, you seem to have a faulty instrument panel, or specifically the oil gauge.
It seems that the gauge is somehow mechanically stuck.
There two options (both of which require the removal of the cluster).
You remove the cluster, and check if you can move the gauge by hand to proper position.....
If that does not work, the instrument cluster would need replacing....