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Thread: Drivetrain Problem

  1. #1
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    Question Drivetrain Problem

    I bought used 2016 BMW 318i about 10 months ago. Recently it just lost power and gave me drivetrain error. Got it scanned the errors 123422, 104402, 120408 and 128104. Error 104402 (intake-manifold sensor) and 128104 (O2 sensor before catalyst convertor) have been there for sometime, I think more than 5 months but with no loss of power or drivetrain error. After the drivetrain error then there were 2 new errors 123422 (electric westgate adaptation: start position closed not detected) and 120408( charging pressure control: switch off as consequence). Turbo was re-conditioned 6 months ago. What could be the problem. I also replaced MAP sensor nothing changed and also cleaned O2 sensor nothing changed. I also changed rail fuel pressure sensor. I am afraid to break the bank replacing all the sensors. What could be the problem.

  2. #2
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
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    Welcome to the Forum!

    Please write out each code word for word.

    Just looking at the codes you do have with a description, it seems a boost pipe is loose or busted. There maybe more issues or problems but none of us have those codes memorized.
    Darin
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  3. #3
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    Quote Originally Posted by dworthy View Post
    Welcome to the Forum!

    Please write out each code word for word.

    Just looking at the codes you do have with a description, it seems a boost pipe is loose or busted. There maybe more issues or problems but none of us have those codes memorized.
    Thanks dworthy. I will check my boost pipe. The codes in full are 123422 electric westgate adaptation: start position closed not detected and 120408 charging pressure control: switch off as consequence.

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