My check engine light came on so I had an Advance Auto person run the test. They said it was the O2 sensor, so I bought one to replace it. Could they have been wrong? Is there much to changing it myself?

 

nope but go back to the auto parts place and get the right socket to remove it..unplug then remove it...put in the new one and replug it in....but you may also want to remove the battery cable for 2 hours so everything resets.......or if you got a big enough adjustable wrench that will work also

 

Thank you kindly!

 

not an issue....

 

Why are people telling me I have to know which one it is??

 

there are two. upstream and downstream. the upstream is in the exhaust manafold and the downstream is after the converter in the pipe. what code did you have?

 

I dont know. I mean I know nothing about that stuff. She said it was the o2 sensor n told me what to buy. Im getting a headache.

 

If your light is still on I would have the code read again. if you have a lean code it could be a 02 senser but there are lots of other things that can cause it as well. diagnostics using just the code is more of a guessing game. a code helps you find the system thats not working correctly but rarely tells you what part to change without more tests.

 

I took it up to our little town garage. Hes gonna look at it in the morning. Ge said he would know after he got it up on the rack if I had the right one. So hopefully I do and thats all it is. I got confused n gave in n took it somewhere, haha. Thanks yall guys.

 

What was the code number?