Hello,

I'm having an issue with my 2002 2.3L that involves what I thought was my B1 S1 O2 Sensor. I brought the truck into O'Reilly's after a check engine light came on and I seemed to be idling pretty rough.

The machine spit out that replacing that O2 Sensor should do the trick. I replaced the part, and reset the onboard computer but after about 3 miles of driving the Check Engine light came back on.

I was wondering if it is potentially the same issue, or are there other common causes that might cause that code because for those 3 miles that the check engine light wasn't on, I had a very comfortable idle compared to after it came back on. Thank you for any and all help!

 

There is no actual code that says "Bad O2 Sensor"

What was/is the code you have P0000?

 

Thank you for the quick response, the actual code is P0171, System Too Lean Bank 1.