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Open the bonnet, lean over the engine and find the exhaust coming out of the back of the engine. The exhaust drops down to go underneath the vehicle as its drops down there is a sensor with wires going to it in the exhaust. This is the front O2 sensor (Lambda sensor). Next in line you'll see the catalytic converter, then after this there is another O2 sensor (the back one) Once you've found it you may find accessing it easier from underneath the car. Hope that helps...

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14y ago

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