1997 Mercedes Benz Other

Electrical problem
1997 Other Mercedes Benz Models 6 cyl Two Wheel Drive Automatic 159000 miles

The check engine light came on and I had the code read which was code P0136, 02 circuit, Bank 1, Sensor 2. Is this the 02 sensor on the exhaust and if so where do I find it on the engine and is it a repair that a somewhat handy mechanic can accomplish?

Thanks you,

April 22, 2008.

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