Oil pressure sensor location 2016 Chevy Colorado 4cyl

Hello, the code you speak of does not reference an oil pressure switch or sensor. It's more about the oil pump. A brief description of the cause could be: "The cause of this concern may be foreign material stuck between the cold start checkball and its seat." You really need a professional inspection and evaluation. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops