I have gotten this code twice now in the last few weeks or so. I know it has to do with slow response with the O2 sensor. My thing is that I replaced those in the last 6 months. Is there anything else that can cause this code? I am sure if anything was wrong with the wires to them the guys who installed them would have pointed it out at the time. I just dont want to have to have it replaced again even though the sensor is under warranty. Thanks for the time.

 

Off the web:

"This involves the front oxygen sensor on Bank 1. This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use.

Symptoms
You will likely not notice any drivability problems, although there may be symptoms.

Causes
A code P0133 may mean that one or more of the following has happened:

The oxygen sensor is faulty
The wiring to the sensor is broken / frayed
There is an exhaust leak

Possible Solutions
The simplest thing to do is to reset the code and see if it comes back.

If the code comes back, the problem is more than likely the front Bank 1 oxygen sensor. You will likely wind up replacing it but you should also consider these possible solutions:

Check and fix any exhaust leaks
Check for wiring problems (shorted, frayed wires)
Check the frequency and amplitude of the oxygen sensor (advanced)
Check for a deteriorating / contaminated oxygen sensor, replace if necessary
Check for inlet air leaks
Check the MAF sensor for proper operation"

Best of luck.