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BMW 3-Series (E90 E92) Forum
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Catalytic efficiency
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10-13-2024, 12:00 AM | #1 |
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Catalytic efficiency
Bank 1 and 2 catalytic efficiency codes, I’m suspecting an exhaust leak but any ideas? 2009 328xi sulev (all 02 sensors were replaced at bmw close to a year ago.
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