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Fuel Guage reading half but tank is empty

jones131
jones131
in Ford Focus Club

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I've been having problems with my fuel gauge it started a few months ago when my gauge showed my tank as a quarter full but it was actually empty. I have now  had the same problem while my gauge is showing just over half full but it is actually empty. I think it could be dirt in my tank or possible a problem with the float but I'm not entirely sure.

Would anyone be able to tell me what is causing this or how to fix it?

  • Quote


    It could be a wiring fault or even a fault with the dash gauge.  Though it usually is a problem with the sender as you suggest.  Unfortunately you would need to remove the fuel tank in order to access the sender unit to check it.  At that point it is easy to test by plugging it back in and moving the float arm up & down manually to see if the reading changes.

  • Quote
    1 hour ago, jones131 said:

    I've been having problems with my fuel gauge it started a few months ago when my gauge showed my tank as a quarter full but it was actually empty. I have now  had the same problem while my gauge is showing just over half full but it is actually empty. I think it could be dirt in my tank or possible a problem with the float but I'm not entirely sure.

    Would anyone be able to tell me what is causing this or how to fix it?

    Go into service mode in the cluster and perform a gauge sweep. see if that cures it.

    If not Disconnect the battery for 10 minutes 

  • Quote
    • Like 2
    • Author
    4 hours ago, DaveT70 said:

    Go into service mode in the cluster and perform a gauge sweep. see if that cures it.

    If not Disconnect the battery for 10 minutes 

    Thank you I'll try that tonight 

  • Quote
    • 1 year later...

    Hello, 

    Had problem, gague showing right, but distance to empty DTE showing wrong. Like full tank, showing 300 km till 0. 

    Solved problem today with FORscan. Checked the fuel tank size in IPC module and set to 47 liters.

    After that, changed fuel level source from PCM to IPC.

    Now, showing 720 liters to 0 with full tank. Everything ok. 

    Here is the link step by step:

    https://forscan.org/forum/viewtopic.php?f=16&t=14698

  • Quote
    • Like 1

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