My daughter's Forester threw the P0130 code so thought I'd replace the front oxygen sensor.

The replacement sensor the dealer sold me looks like it has been used in that it is blue and it has anti seize on the thread. Is this how they come now?

 

^That looks used to me but it is said to be brand new..

i do believe that blue stuff is normal.. but idk about the anti seize..

 

maybe its just a nice gesture =D hah

The last O2 sensors I bought had anti-seize compound on them. Not sure about the discoloration.

The antiseize comes on there just like that on the genuine sensors. The bluing looks a little more than usual maybe but how's the wiring and connector look? The dealer probably wouldn't knowingly sell a used sensor, but you know some people, they'll buy a new sensor, clean up their old one and put it in the box and try to return it.

The more I look at that picture, I'd say it was a new sensor. Doesn't look like a wrench has ever been on it, and it if had been installed and returned, it wasn't on the car very long 'cause that thing is spotless and while I've never tried to clean up a used O2 sensor, I seriously doubt you could get 100k O2 sensor to look that good.

that is def. a new sensor..that anti seize is the give-away for me....Also as others have mentioned it doesnt look like anyone has ever had a 22mm on it...

Looks new to me, too. Every new O2 sensor I've purchased has had antisieze on it. That antisieze is in a glob, not smeared as if it had been screwed in. The tip is clean (would be black if used). Looks like the hex had never seen a wrench. And the gasket is not crushed.

hmm ive nvr had anti seize on the o2 sensors ive bought.. granted i only bought two.. an dnot from a dealer.. but... yeah...

Thats new. the antiseeze comes with it, and the blueing is from welding on the shield.

 

nipper

I just never seen the blue-ing before - of course, I've only only ever replaced three sensors in my lifetime.

Thanks for all the input, quys.

Edited April 19, 200916 yr by RemcoW

Yeah, that's a new sensor, I've done enough of those + Toyota ones, that anti-seize stuff comes on them (There is usually a little plastic collar that goes over the threaded part to protect it in shipping).

 

Also, I'm not totally 100% sure since I can't look it up from home, but I think there is a ECU reflash that covers a P0130 code, don't know for sure though, esp. without knowing the year of the vehicle.