PO521 ENGINE OIL PRESSURE SENSOR/SWICTH RANGE PERFORMANCE

  • Tiny
  • Jojan Kollattil
  • 2007 Chevrolet Lumina
  • 160,000 miles

Suddenly showing check engine and I put scanner and showing PO521 engine oil pressure sensor/swicth range performance, what is the solution for this?

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Tuesday, October 11th, 2011 AT 11:30 AM

1 Reply

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,409 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

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Tuesday, October 11th, 2011 AT 12:15 PM

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