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2007 Lexus RX400h Question: Emissions troube code

 

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lambo, 3.3L V6, Merrillville, IN, June 25, 2010, 16:54
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My check engine light is on and Lexus got a code P0051, P2240, and P2241 A/F sensor B2-S1 open Circuit. Isn't this the oxygen sensor and shouldn't it be coverd under the Emissions Warranty?

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