P0089-64 (E8) Fuel Pressure Regulator 1 Performance
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Thread: P0089-64 (E8) Fuel Pressure Regulator 1 Performance

  1. #1
    FRESHMAN ROVER
    Join Date
    October 30th, 2018
    Posts
    20

    P0089-64 (E8) Fuel Pressure Regulator 1 Performance

    2016 Range Rover Sport Supercharged 86K miles. (Out of Warranty) is showing the following Code: PCM-Engine Petrol V6

    P0089-64 (E Fuel Pressure Regulator 1 Performance -Algorithm based failure-signal plausibilty failure.



    What is the real cause of this code?


    Is it the Fuel Pump?

    OR the Low Pressure and/or High Presure sensor(s)?

    Software Update?

    How to update the software using GAP Diagnostic?

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  3. #2
    FRESHMAN ROVER
    Join Date
    October 30th, 2018
    Posts
    20

    Re: P0089-64 (E8) Fuel Pressure Regulator 1 Performance

    The Check Engine Light disappeared for a day and a half and returned today. I overfilled the tank and it went away. When I hit 75%, the Check Engine Light reappears.

  4. #3
    FRESHMAN ROVER
    Join Date
    September 29th, 2018
    Location
    long island, ny
    Posts
    234

    Re: P0089-64 (E8) Fuel Pressure Regulator 1 Performance

    Quote Originally Posted by EdwardRR View Post
    2016 Range Rover Sport Supercharged 86K miles. (Out of Warranty) is showing the following Code: PCM-Engine Petrol V6

    P0089-64 (E Fuel Pressure Regulator 1 Performance -Algorithm based failure-signal plausibilty failure.



    What is the real cause of this code?


    Is it the Fuel Pump?

    OR the Low Pressure and/or High Presure sensor(s)?

    Software Update?

    How to update the software using GAP Diagnostic?

    P0089-64 Fuel Pressure Regulator 1 Performance - Signal plausibility failure NOTES:

    • Monitor description. The command signal to the fuel pump driver module is above a threshold
    • This DTC is set when the powertrain control module has detected plausibility failures.




    • Fuel system leakage from the fuel tank and lines
    • Low pressure fuel pump failure
    • Check for fuel system leakage from the fuel tank and lines both internal and external of the fuel tank
    • Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest
    • Check and install a new low pressure fuel pump as required
    2019 Range Rover Sport HSE Dynamic

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