No, they either work or not.
Unfortunately there is no fixing an O2 sensor. If the "check engine" light is on due to an O2 sensor, it can only be remedied by replacing the bad sensor.
Ain't no fixing an O2 sensor. If there is a problem with it, replace it with a new one.
replace rear o2 sensor.
Check the O2 sensor(oxygen sensor) AFTER the catalytic converter
change your o2 sensor
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.
You cannot repair an O2 sensor. Replace it.
O2 sensor circuit bank 1 sensor 2 no activity. Check the wiring and connections to bank 1 sensor 2 O2 sensor, if all looks good replace the sensor.
Bank 2 sensor 1 is the O2 sensor in the exhaust manifold closest to the firewall.Cut and paste the link below for a detailed fix with pics of the O2 sensor repair."http://polifrogblog.blogspot.com/2009/11/sienna-o2-sensor-change.html"
O2 sensor heater circuit malfunction (bank 1 sensor 1). You probably have a burned out Bank 1 Sensor 1 O2 sensor. Also check the wiring at the sensor for damage.
It's an O2 sensor code
The fuse is blowing out because the wire for the O2 sensor is shorting to ground. Replace the entire wire (trace it through the wiring harness) and the connector for the sensor.