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which sensor is this?P0151 HO2S Circuit Low Voltage Bank 2 Sensor 1


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I have a 1996 Sedan Deville. This message accompanied my vehicle progressively bogging down for about 5 miles until it eventually wouldn't move at all. If anyone knows the location of this sensor I would be grateful to find out.

Thankyou, :wacko:

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P0151 Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 1

Bank 2 is the front cylinder bank and Sensor 1 is the oxygen censor right after the collector.

From your symptoms, your catalytic converter is clogged. The sensor may be OK. If you verify that the cat is bad, ask your dealer if the cat is under extended Federal warranty. If not, get it replaced at a muffler shop, not a dealer; dealer prices are really, really incredible for cats.

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Unless I am mistaken, Bank 2 Sensor 1 is on the left bank (front) manifold. Bank 1 Sensor 1 is on the right bank (rear manifold). Bank 1 Sensor 2 is pre- CAT and Bank 1 Sensor 3 is aft-CAT.

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