p1135 Fuel/Air sensor, what part to buy

Throwing a p1135 for the fuel/air metering sensor. This is the sensor on the exhaust manifold, looks like an o2 sensor right? Advance, NAPA, etc... list an upstream o2 sensor, is this the part to buy? Anybody have a good place to buy this from, or a recommendation on brand? I got a denso for my truck, but can't find any for a camry. It's a 2001 4 cylinder.

Thanks!

P1135: The heater in the sensor is drawing too much or too little current. 

The sensor has a heater to allow it to get up to operational speed more quickly.  Most likely the heater in the sensor is burned out or could be a problem in the wiring going to the sensor.

Typically the front sensor goes bad.

Make sure you get the right sensor.  Is this a California emission certified car?  Check for a sticker under the hood stating something like "CALIF."  If so you will need a wide band sensor.

Check www.rockauto.com for info on sensors including Denso.  Do suggest the Denso brand as other brands (other then Toyota) can have issues when used and cause the light to come back on.

http://www.rockauto.com/catalog/x,carcode,1375185,parttype,5132,EPIsubcategory%5B1015%5D,Oxygen%2BSensor,partGroup,19