Ok I see someone posted this a few days ago and I ran across the same problem. Well my oxygen sensors arrived in the mail today. I went out and installed them, reset the ECU and I drove for a while and the light come s back. They are Bosch sensors from expressautoparts. I didn't use anti-seize. I was wondering what fuses am I suppose to check ?

 

Bosch sensors already have antiseize applied to them from the factory. Are you sure the o2 sensors were tripping your CEL?

 

I am not sure if it is the Sensors themselves, but they are brand new. I just went out and checked the fuses, I don't know if it was the right fuse(#32) for the sensors. If it was the fuse was missing and I replaced it. I reset the ECU again. So I'll drive around a lil more and see if it comes back.

 

Did you check the code before you reset the ECU? If so, what was it? If not, you should have.

 

I got these codes 0901, ,0304,and 0707.

 

0901=upstream oxygen sensor heater fault

0304=Knock sensor or circuit fault

0707=Downstream Oxygen sensor or circuit fault



It could be your fuse, but usually all three O2 sensors would be going off.

Knock sensor could be going off because of the )2 sensors. Which 02 sensor did you replace?

 

I replaced the two front ones.

 

Try checking the harness to the o2 sensors with a multimeter.

 

If you're tripping the 0707 code , this needs to be changed, also. This is the rear O2 sensor that is in the catylic converter. Replacing the upper one, you have to know which "bank" need it's coming from....the left or right. Since you replaced both, the code should have went away. Replace the rear and see if your codes disappear.

 

Sounds like you may have unnecessarily replaced one of the front oxygen sensors ...

 

I had similar problem 0901,0902,0101 - and I was going crazy over it !!! but it's fixed now !!!!
the 15 amp fuse was in the wrong spot !!!!
the correct place for it is socket no# 34 , and I had it in no#35
hence - all those codes
I reset the ECU and codes are all gone !!!!
Nick