P0465 Code - Purge Flow Sensor Circuit Malfunction

Discussion in 'P - Powetrain Codes' started by fault code, Jan 17, 2018.

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    fault code Administrator Staff Member

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    What Does P0465 Mean?

    OBD-II Code P0465 is defined as a EVAP Purge Flow Sensor Circuit

    The evaporative control (EVAP) system captures any fuel vapors from the fuel tank and sends them through the vehicle's intake to be burned in the normal combustion process. The EVAP Purge Valve allows the fuel vapors to enter the engine through the intake. When the engine control module (PCM) detects the evap system has flow when it should not, it will set code P0465.

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    What are the common causes of P0465 ?
    • Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
    • Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
    • Some aftermarket accessories and performance modifications


    How do you troubleshoot P0465 ?

    There are currently two main types of cylinder deactivation used today, depending on the type of engine. P0465 code for the pushrod design which uses solenoids to alter the oil pressure delivered to the lifters. In their collapsed state, the lifters are unable to elevate their companion pushrods under the valve rocker arms, resulting in valves that cannot be actuated and remain closed.

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