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  1. #1
    Established Member Two Rings
    Join Date
    Jun 02 2021
    AZ Member #
    603524
    Location
    Los angeles

    2018 rs3 error code P308D 00

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    Hello folks, I have a problem with my 2018 rs3. I decided to do a scan on my car earlier today and it scan code P308D. Haven't driven the car in 2 days and the last time I drove the car it ran fine with no issues.

    The car is tuned on unitronic stage 2 e85. Have been running this tune for approximately 5 months and have never had any issues until today.

    Appreciate any help or advice with this!

    Thanks everyone and happy holidays!
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  2. #2
    Active Member One Ring
    Join Date
    Dec 15 2024
    AZ Member #
    998880
    Location
    Sydney

    Did you figure this out? I have the same code

  3. #3
    Veteran Member Four Rings MikTip's Avatar
    Join Date
    Dec 25 2004
    AZ Member #
    4604
    Location
    Earth

    Quote Originally Posted by soulection View Post
    Hello folks, I have a problem with my 2018 rs3. I decided to do a scan on my car earlier today and it scan code P308D. Haven't driven the car in 2 days and the last time I drove the car it ran fine with no issues.

    The car is tuned on unitronic stage 2 e85. Have been running this tune for approximately 5 months and have never had any issues until today.

    Appreciate any help or advice with this!

    Thanks everyone and happy holidays!
    P0308D. Fuel pump speed too low...

    The fuel pump in the fuel tank is electric...has an electronic controller...

    RS3 was going 192kph...in 2022...

    In the middle pic...

    My guess stock fuel pump cant keep up with the cars fueling demands
    Last edited by MikTip; 01-03-2025 at 08:53 AM.
    2015 S3 with 210,000 miles with new 2019 Q5 motor. Still going!

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