if the oil pressure is above the manufacturer specification and above the oil pressure switch, the problem is
a defective oil pressure switch
a defective oil pressure connection
a defective cable harness
a defective ECU
an oil pressure installed at the wrong location
a fitting installed between the oil switch and engine block with a diam restriction (this cause a pressure loss information to the oil switch)
a wrong pressure switch reference, with oil setting out of engine spec.
if the oil pressure is under the manufacturer oil pressure spec and appear warm or cold engine
the problem could be
defective oil pump
defective oil pump valve
journal bearings worn out (check oil filter by opening it to find metal particles)
broken internal engine oil conduit
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