P0523 Code - Engine Oil Pressure Sensor/Switch Circuit High Voltage

Discussion in 'P - Powetrain Codes' started by fault code, Jan 23, 2018.

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    fault code Administrator Staff Member

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    What Does P0523 Mean?

    OBD-II Code P0523 is defined as a Engine Oil Pressure Sensor/Switch High

    The Engine Oil Pressure Sensor tells the engine control module (PCM) the engine oil pressure. When the PCM detects an incorrect signal from this sensor it will set code P0523.The low oil warning light on the instrument cluster may also illuminated.

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    What are the common causes of P0523 ?
    • Some of the possible causes for the P0523 code to appear include the following:
    • Wrong engine oil used
    • High pressure because of an obstruction in the oil passageway
    • The high pressure could be because of constriction in this passageway
    • Faulty connection or faulty wiring in the oil pressure sender circuit
    • Faulty sensor
    • Failure to change the oil at regular intervals

    How do you troubleshoot P0523 ?

    Deactivation of cylinders is achieved by releasing a synchroniser pin that normally interlocks the cam follower and rocker arms. P0523 code resolves the synchroniser pin is released using hydraulic pressure which is controlled by a dedicated solenoid.



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