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Ds3 THP ESP/ASR fault when Low Fuel - Heater pipes warming - Oil consumption

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  • #31
    Originally posted by Dangerousfish View Post
    This is a generic powertrain code, which means it covers all makes/models, 1996-newer. However, specific troubleshooting steps will vary depending on the vehicle. Code P0313 refers to an engine misfire under low fuel conditions. It is one of a few ambiguous codes on a vehicle, which if taken at face value, diagnosed and corrected seems straightforward enough.

    The code is set when the computer --through signals from a range of sensors -- determines that the engine miss is due to a lean (to much air and not enough fuel) condition. If the fuel level is low enough to uncover the fuel pump, sporadic pressure surges due to the pump's inability to pick up the remaining fuel will cause a "Lean" condition. In all likelihood you have either lowered the fuel level to low before refilling, or you have a legitimate fuel delivery problem. If the fuel system proves to be working properly, several other mechanical failures can cause this scenario.

    Read more at: https://www.obd-codes.com/p0313


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    Try returning back to stock and see if the fault continues.

    It could also be a sign that your fuel pump is on it's way out.
    I had the same code today on low fuel level

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