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BMW 3-Series (E90 E92) Forum
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Downstream o2 sensors throwing codes
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| 07-22-2024, 07:35 PM | #1 |
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Downstream o2 sensors throwing codes
Hi bmw friends, my 06' 325 has a cel from the two o2 sensors after cat. Throwing codes 2c9e and 2c9f. They're both reading at between .42 and .43V while idle. Should I go ahead and order the replacements or are there other things to check first?
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