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p0030

  1. Welby

    W211 OM642 O2 sensor location - P0030

    Hi all Under the car now and I can find only one O2 sensor on the car, is this correct? I found the downstream one at the bottom of the CAT, upstream ones can't feel or see any. Any help would be much appreciated. Cheers Sent from my iPad using MBClub UK
    • Welby
    • Thread
    • location om642 p0030 sensor w211
    • Replies: 5
    • Forum: Engine
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