PO521 ENGINE OIL PRESSURE SENSOR/SWICTH RANGE PERFORMANCE
2007 Chevrolet Lumina
Suddenly showing check engine and I put scanner and showing PO521 engine oil pressure sensor/swicth range performance, what is the solution for this?
Tuesday, October 11th, 2011 AT 11:30 AM
Either you have a wiring problem (check for shorts or damage to wiring) or the sending unit itself is bad. It could be just the oil pressure switch. Make sure the connector is not full of oil from an external oil leak