My engine light came on while ideling.I took it to a parts house to check the code.It said low oil pressure . I checked my oil level it was fine also my oil gauge was fine as well. This problem started after changing my oil. I did use the correct oil. Please help with problem.Thanks Frank

 

What motor? How many miles? How much oil did you use? The oil "gauge" is little more than an idiot light with a needle.

 

As long as the oil level in fine I would replace the oil press sensor and go from there.