Depends on what car you have, but it will probably cost you about 400$ or more.
$300 with labor
It just cost me $220.00
A Bosch O2 sensor, from NAPA, is $91 here in southwest Washington.
The cost to replace an O2 engine sensor on a Mitsubishi 3000GT typically ranges from $100 to $300, including parts and labor. The price can vary based on factors such as the specific sensor type, labor rates in your area, and whether you choose an original equipment manufacturer (OEM) part or an aftermarket option. It's advisable to get quotes from local mechanics for a more accurate estimate.
To change an O2 sensor you need to disconnect the wiring harness from the sensor. Use an O2 sensor socket and ratchet set to remove the old sensor and replace with the new one.
the price of the 02 sensor. under 20 bucks. and about 10 min of your time.
An O2 sensor unscrews just like a spark plug.
Remove the vacuum hose from the O2 sensor. Remove the wiring harness. Remove the O2 sensor retaining screws. Reverse the process to install the new O2 sensor.
You cannot repair an O2 sensor. Replace it.
Ain't no fixing an O2 sensor. If there is a problem with it, replace it with a new one.
i got one for 80 bucks at napa
Around 90-100 dollars