07 freightliner century showing fault code Sht Lo 128 257 04?

Check engine light stays on, truck run normal!

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  • Mark
    Lv 7
    7 years ago
    Favorite Answer

    there is a big truckers site called " truckers report " go there and ask people that own them . more likely you get an answer there than here.

  • 7 years ago

    Are you using your regen frequently? That was the code that came up when my filter for the regen was dirty and it wasn't working properly.

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