Electrical connection O2 sensor stuck

242 Views 7 Replies 5 Participants Last post by 56chuzz, 5 d ago

acw

Discussion Starter · 8 d ago (Edited)

Good Evening,

I have replaced my upstream O2 sensor in the past because it was malfunctioning in December 2020.

I believe I have to replace it again because I am getting error code P2243 (in addition to P0420, which I have accepted as permanent). The vehicle itself is idling roughly when stopped, and on two occasions, completely stalled. It was able to be restarted afterwards.

However, while I was prepared for the screw-in end of the sensor, I was not prepared for the electrical end of the sensor.

Automotive tire Motor vehicle Bumper Automotive exterior Gas

The sensor in question was this that I'm replacing: KAX 234-5107 Oxygen Sensor,... https://www.amazon.com/dp/B084P2MZFZ?ref=ppx_pop_mob_ap_share

I have no idea how to get this apart. The black piece does not pull apart. I tried squeezing the other end with pliers, and sliding in a screwdriver, but neither one of them is working. Is there a way to get these apart? Thanks in advance

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56chuzz

· #2 · 8 d ago

Look at photo #3 there. It looks like there's a "tit" on top of that plug. Slide a flat tip screwdriver in there and pry the tab that's over that "tit" up and pull. That looks like the only clip holding it together to me. I haven't had to fool with an O2 sensor in over 30 years. There was a recall on them for a while. I don't know if it would apply to you. Hyundai, Kia recall over 500K vehicles as fire risk spreads

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rhysoul

· #3 · 7 d ago

I hope that’s not the sensor you’re going to use. Looks like a no name POS.

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bwdz75

· #4 · 7 d ago

Guessing you bought a crappy online or auto parts store sensor and that is why you have to replace it again so soon. Go with an OEM sensor and it will be good for 10 years like the original was.

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acw

Discussion Starter · #5 · 6 d ago

I now have an OEM sensor in there. With something as critical as that, I won't use a knockoff part again.

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bwdz75

· #6 · 5 d ago

acw said:
I now have an OEM sensor in there. With something as critical as that, I won't use a knockoff part again.

That's a good plan. OEM parts are really not much more expensive then the junk you find at auto parts stores and online retailers but they are expensive in the long run. I had a contractor at my house last Saturday and he was telling me how his work van (about a 12-15 year old Chevy) needed another radiator but he had a warranty from Auto Zone as he replaced it 2 years ago. So I said the OEM part lasted 12 years and you're going to be replacing this one and the coolant every 2 years, great bargain LOL

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Nobutter69

· #7 · 5 d ago

bwdz75 said:
That's a good plan. OEM parts are really not much more expensive then the junk you find at auto parts stores and online retailers but they are expensive in the long run. I had a contractor at my house last Saturday and he was telling me how his work van (about a 12-15 year old Chevy) needed another radiator but he had a warranty from Auto Zone as he replaced it 2 years ago. So I said the OEM part lasted 12 years and you're going to be replacing this one and the coolant every 2 years, great bargain LOL

We used to always joke when a customer said they got a lifetime warranty from a local parts place that it meant they would be replacing it for a lifetime!

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56chuzz

· #8 · 5 d ago

Yep. Back when I worked for autozone and advance, I'd ask people if they wanted to replace a part every few months or every few years. For the price difference, I'd sell them the "lifetime warranty" stuff if they planned on keeping the vehicle. If it was just to turn around and sell it, then the 1 year warranty crap was the way to go.

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