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E46 F10 W204 W212
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So I have some pending codes that aren't hurting my car but I tried to get them off anyways for fun. Yesterday I swapped my existing pre cat 02s with each other and my car ran like a POS haha. It immediately went into limp mode and I just switched them back and the car runs almost perfect again. Are the 02s bad or does something else have to do with it? Thanks
Did you move them physically AND swap the connectors?
 
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