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P0521 Chevrolet -

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With this code on will it damage the motor. The motor is running fine with no noises or knocks.

Vehicle: 09 Chevrolet Silverado 1500 5.3l

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P0521 Engine oil pressure sensor performance

No this code condition is with the pressure sensor itself, If the actual oil pressure is below 6.8 psi at idle you would a need a thicker oil insted of the recommended 5w-30.

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