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P0521 CHEVROLET - Put on new sensor and oil pressure dropped immediately. 2nd one in 3 weeks. ???

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What could be the cause of the sensors going bad so quickly?  I have put 2 on in 2 weeks. It's a 2005 Trailblazer.

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You may have a problem with the wires. Before replacing another sensor, check the connector. Make sure the connector is not loose. Also check the oil level and condition.

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