I have a 2003 Nissan Sentra SE-R Spec V. o2 sensor location?!?1

Hi Slim Jim,Here's a link to a pic where your oxygen sensor is. 2000 2004 Nissan Xterra Oxygen Sensor O2 Sensor Location V6 Engine Here's another link to some new oxygen sensors.Get the exact fit ones. Oxygen Sensor

The rough idle is associated with the p011 code. The P011 code is: Camshaft A over advanced. There is a mechanical fault with the intake camshaft.
You need to take the car into a mechanic, preferably the dealer since they have all of the needed special tools, to properly diagnose and repair the issue.

standing in front of the vehicle looking at the engine bank 1 sensor 2 is the sensor after the cat converter on the bank on your left
bank one is the left cat ---bank 2 is the right cat. Sensor 1 is the one before the cat and sensor 2 is the one after the cat on either side

look for this symbol https://www.google.ie/search?q=windshield+washer+fluid+reservoir+located+on+a+2003+Nissan+sentra+se-r+spec+v&aq=f&um=1&ie=UTF-8&hl=en&tbm=isch&source=og&sa=N&tab=wi&ei=wL1pUe-uGubg7QagtYDgAw&biw=1092&bih=541&sei=xL1pUZf7CNHW7QaAwIGAAw#um=1&hl=en&tbm=isch&sa=1&q=windshield+washer+fluid+reservoir+located+on+a+2003+Nissan+sentra&oq=windshield+washer+fluid+reservoir+located+on+a+2003+Nissan+sentra&gs_l=img.12...121786.127258.0.129254.12.12.0.0.0.0.86.736.12.12.0...0.0...1c.1.9.img.PJG3tu65zcs&bav=on.2,or.r_qf.&bvm=bv.45175338,d.ZGU&fp=723766eb5ab662c5&biw=1092&bih=541&imgrc=jI1B4rKGkOHuCM%3A%3BKqlzL-Q5371jAM%3Bhttp%253A%252F%252Fimthemechanic.com%252Fwp-content%252Fuploads%252F2011%252F12%252F2010-Nissan-Sentra-Winshield-Wiper-Fluid.jpg%3Bhttp%253A%252F%252Fimthemechanic.com%252F2011%252F12%252F28%252Fadd-windshield-wiper-fluid-2010-nissan-sentra%252F%3B2017%3B1393

All O2 Sensors are on the exhaust pipes and or in the converters,on all vehicles. Follow the wires.

Note - not a solution..just adding my woes!
I drive a 2003 Nissan Sentra SE-R Spec V.
My car suddenly stalled 1 day and the engine wouldn\'t turn over. Brought it to my mechanic and had the Camshaft position sensor replaced by my mechanic. The car ran fine for about 2 weeks and then the light was back on with the initial symptoms.

Took the car into the dealership and they diagnosed it again as P0335. Said that the mechanic hadn\'t installed the sensor correctly. Charged me a bunch of money to replace the thing and not too long ago the check engine light is on. The Revs bounce around everywhere. Checked the code again and it\'s P0335 yet again! Am in talks with the dealership to get to the bottom of this...

Hello erosgirl32....according to the service manual for the 1.8 litre sentra, it is located under the starter at the rear of the engine.
This is not an easy job for the do-it-your-selfer.
Good luck...i hope this helps, please rate me a fixya.

Most times when you have a cut in power when the RPM's are high that's most likely a "SPARK" problem. However it can also be a "GAS " problem. Does check engine light come ON if it is or even if it NOT ON there can still be a Code stores in your computer. My first thing would be a BAD CRANK sensor/CAM sensor. This is my recommendations you should have this vehicle place on a code scanner/computer AUTO-ZONE does this check for free then get the codes if any is present and get back to me asap. I strongly thing it would be a crank sensor but if not there is a 20% chance its a FUEL PUMP can meet the demand when you hit the gas therefore then engine starves and dies. LEt me know how you made out. Good Luck and Thanks for using FIX YA

sounds like a computer module problem . have the computer diagnostic scan done at your nissan dealer. good luck mister bill

I have the same car and I know there was a TSB for the ECM . I know the ECM issue has cause some cars to stall while driving