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Thread: code 1222 Lambda Control 1 what is wrong

  1. #1
    Join Date
    Dec 2006
    Location
    Atlanta Georgia
    Posts
    47

    Default code 1222 Lambda Control 1 what is wrong

    I got my project 89 535 running Saturday. Cleaning switches, connectore, and tranny fluid got her out of limp home mode and the tranny seems fine. I put a new O2 sensor in since I had to swap the broken exhaust. I have driven the cat 100 miles and did the stomp test today. I get a code 1222 (lambda control 1 - o2 regulation). the car seems to run good. What should I be looking for? The car has a build date of 11-88.

  2. #2
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default

    any lambda code means that the computer cant get the fuel mixture close enough to regulate. This is usually some sort of intake leak or bad injectors.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  3. #3
    Join Date
    Dec 2006
    Location
    Atlanta Georgia
    Posts
    47

    Default

    Thanks,
    now I know where to start looking.

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