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What does code two lean bank one mean?

April 26, 2017Bank code Lean mean

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What does code two lean bank one mean?

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Lean bank one implies that more air than desired in the air/fuel mixture is being burned by the engine, or in the case of a “V” engine, the bank with cylinder 1. This could be caused by a lack of fuel, vacuum leak or fading output from the oxygen sensor in your exhaust pipe among other things.