Should I replace O2 sensor on 2017 Camry with 149K miles?

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May 7, 2025 at 7:29 pm #568 Reply
Jay
2017 Toyota Camry. Do you guys think I should replace this o2 sensor? The car has 149,000 miles and never changed since I’ve owned it. I put around 104,000 miles on it. No CEL. But lately my MPG has been less. Any advice appreciated-thanks.
May 7, 2025 at 7:31 pm #569 Reply
Thomas
I’d throw a new one in anyways since you’ve already got it out, surely they’re not too expensive.
May 7, 2025 at 7:31 pm #570 Reply
Thomas
Don’t take a chance by only replacing that part. Since it is running just fine with no problems, just replace everything you can think of 😀
May 7, 2025 at 7:31 pm #571 Reply
Patrick
Yes, performance on O2 sensors degrade after about 75000 miles. Long overdue.
May 7, 2025 at 7:32 pm #572 Reply
Harry
To parrot another comment-if it ain’t broke, don’t fix it. Unless you are getting an OEM Toyota sensor, you might cause a problem with some brand aftermarket sensor. Unless there have been other issues to cause its failure, it’s likely to be good for the life of the car. IF you currently have no check engine light on, and you’re able to, monitor live data with a scan tool to verify performance.
May 7, 2025 at 7:32 pm #573 Reply
Melanie
If there isn’t anything wrong with it, don’t replace it. Things I would look at before replacing O2 sensors are: tire condition and set to proper pressures (or slightly higher), spark plug condition (if they haven’t been replaced, that would be the first thing to do), brake condition and alignment. Make sure you are getting gas from a good source…some places have a little more ethanol in their fuel then what is supposed to be and it will burn faster.
May 7, 2025 at 7:32 pm #574 Reply
Ryan
No code, you shouldn’t have touched it. That’s an OG good sensor, it looks hella clean for that many miles. A new one will not help.
May 7, 2025 at 7:33 pm #575 Reply
Kevin
If there was anything wrong with it, you’d have a check engine light, I bet if you check the fuel trims everything will look good, you could consider cleaning it if you’re worried.
May 7, 2025 at 7:33 pm #576 Reply
Charlie
That’s not a Oxygen sensor, that’s called a (Air/Fuel sensor)
It’s a wide band and Toyota vehicles are extremely sensitive to Manufacturers of them, and style (part number)
Make sure to use an OE AFR sensor on these applications.
May 7, 2025 at 7:34 pm #577 Reply
Kolby
Yes, I don’t care what anyone says I’ve had this issue with multiple customers cars of them not replacing them after taking them out and the gasket doesn’t seal because it’s a one time smash gasket, and then it makes the car run like shit.
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Should I replace O2 sensor on 2017 Camry with 149K miles?

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