Mercedes-Benz Forum - View Single Post - P0400 Code!!!
Thread: P0400 Code!!!
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post #5 of Old 08-15-2019, 01:25 PM
Noodles
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See this post from our sister site. From around post #140 it goes into detail about plugged ports.

https://www.benzworld.org/forums/w16...tem-diy-8.html
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