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Thread: code P0203 P303

  1. 03-17-2018, 09:08 AM #1
    mswheelock1
    mswheelock1 is offline Member
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    2004 bmw 325i

    code P0203 P303

    Rough idle engine Light on.

    repace # 3 injector, # 3 coil and still having that code any ideas

    Thx
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  2. 03-17-2018, 10:35 AM #2
    MIKYZZ4's Avatar
    MIKYZZ4
    MIKYZZ4 is offline Apprentice w/#yrs. exp.
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    EXOTICS
    Check the injector wiring,
    inspecting the wires and connections specifically for cylinder#3.
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  3. 03-18-2018, 12:22 PM #3
    mswheelock1
    mswheelock1 is offline Member
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    I did . and thet all good. this is a returning code . Am guessing ECM?
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  4. 03-18-2018, 01:46 PM #4
    MIKYZZ4's Avatar
    MIKYZZ4
    MIKYZZ4 is offline Apprentice w/#yrs. exp.
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    Btw, have you cleared the codes first? Can you reset adaptations with your tool?
    Try disconnecting the battery for 15~30mins, that may work on your vehicle.
    Last edited by MIKYZZ4; 03-18-2018 at 01:55 PM.
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