Check Engine Light - Need part number help.
 

My friend has a 2001 SC2 with a check engine light. We took it to Autozone and they pulled the code P0133. Can someone help me out as to which part we need to buy?
also, do we need the heated or non heated?

http://www2.partstrain.com/store/?N=...4294967258+773

Any help would be great!
Thanks!

Before you go changing sensors, how long has it been since your friend's car had a tune up ? Also, how many miles does it have on the odometer ???

121,000

Not sure about the tune up...

Why? What are you thinking?

Well, an inefficiently running engine (one with clogged air filters and old spark plugs/wires) tends to put additional strain on the exhaust system with unburned hydrocarbons. Changing a sensor may not be the correct option (although I'm not ruling that out). Does your friend's SC2 seem a bit sluggish, or seem to lack the pep and power it once had? Need to look at those types of possibilities before just changing out the sensors. True, a new sensor might fix it for a while, but if the engine needs service like I outlined above, the SES light will be back before long .....

Yes she does notice its a bit sluggish and seems like the gas mileage is lower. But I thought those symptoms are caused by the sensor causing issues.

As OA stated, it can be a combination of things which lead to poor performance.

Start with a general tune up -- it's cheap and lets you rule out the easy stuff. And you need to do it regardless. Many codes can be falsely triggered by other conditions.

You may indeed have a bad 02 sensor -- but get everything else up to par first before you start swapping sensors.

Wondering if anyone has a picture of where the sensor is located?

so did you do a tune up first?

If you insist on playing swap-a-sensor, the front O2 sensor is in the exhaust downpipe just below the exhaust manifold. If you do change it, get the OEM Denso sensor a few more $$ -- the Bosch ones suck (in my personal experience)

Yes I got the Denso

and...........