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The Bank 1 Sensor 1 is located on the side of the engine with cylinder #1 before the catalytic converter. The most frequent fix is to replace the sensor. It's apparently not hard to remove and screw in a new sensor, but the location of this one is a bear to get to. That means really difficult. One way to avoid the hassle is to take it to a mechanic who knows how and has the right tools.

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10y ago

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