PO521 engine oil pressure sensor/swicth range performance

2007 CHEVROLET LUMINA
160,000 MILES
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JOJAN KOLLATTIL
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  • 1 POST
Suddenly showing check engine and I put scanner and showing PO521 engine oil pressure sensor/swicth range performance, what is the solution for this?
Oct 11, 2011 at 11:30 AM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
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
Oct 11, 2011 at 12:15 PM