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Thread: fault code 1540

  1. #1
    Registered User
    Name: marcus

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    fault code 1540

    Ran a diagnostics . code 1540 shows up which is air bypass malfunction .


    ive checked all air pipes..is there something that's a usual issue to look for or any ideas ?

  2. #2
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    fault code 1540

    Actuator itself bad?

    Edit
    Search on the internet is showing a circuit malfunction.

    Air Bypass Valve Circuit Malfunction.

    So the solenoid is bad more than likely or broken wire

  3. #3
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    do you mean the ICV ?? it idles smoothly although when cold it idles low . when warm its fine

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    No, thereís a solenoid that actuates the bypass valve. if I remember correctly itís right above it. That code probably is pointing to an open circuit

  5. #5
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    Thanks dude.. figured it out. Wire broken just as it enters the plug. All fixed now idles a treat.. thanks.

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