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Hi all
i have a 97 e420 that I purchased a few months ago. Car ran great and then a few weeks after I had the engine tick issue. With the research I did and information I gathered from this site I did the oilers replacement along with half of the breather hose being replaced. The car ran fine when put back together. I replaced the other half of the breather hose today and Now the car acts like it’s is missing and it threw a long list of codes. I triple checked everything that I removed and everything is back. I did have to unclip a connector on one of the MAF sensor housing to install the other half of breather hose.

codes are
201, 205, 204, 208, 206, 203, 1453, 1420, 446, 443

there were no codes prior to replacing the second portion of the breather hose and the car was driving fine until this

any help would be appreciated

PS. Excellent Info for the engine tick

thank you