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BMW 3-Series (E90 E92) Forum
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29F5 - Faulty o2 sensor?
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06-01-2023, 09:24 PM | #1 |
Enlisted Member
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Rep 48
Posts |
Hi all,
Recently my engine light turned on with error codes 29F5 and 29F4. I checked the post cat o2 sensors output and got a very “noisy” signal. Is the sensor broken? Graph of sensor output below. (Ignore coolant temp lol) |
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