Oil pressure sensor?
 

My oil light comes on my 2005 PT CR, only when it idles.
I had oil checked and oil is full and the oil filter changed.
Since it only comes on when idle and goes off when driving I read it may be pressure sensor?
Anyone else have any info and problems like this or solutions?
I have to go to a mechanic for all my repairs and would like to know what I am in for cost wise

Labor time is about a 1/2 hour, The part is probably around 25 to 30 bucks. You should easily have change from 100$ bill.