Buy the new sensor and it comes with instructions. The tricky part is finding it. On a forester its located on the up pipe manifold. Since that's a boxer engine, the mainfold is low, you have to get under the car. A bosch O2 sensor has a nice detail set of instructions for replacement.
Location varies with model of Subaru, but most are installed just upstream (towards the engine) from the catalytic converter located under the right hand drive shaft. Mike is correct-- you must get under the car to replace. Make sure you follow safety and use a good set of car ramps on level solid ground to raise the car, or use jack stands. Best to work on a cool engine/car. Unplug the wire leading from the O2 sensor, then unscrew the sensor to remove. The old one may be stuck quite well, but it unscrews like a spark plug. When installing the new one, avoid getting dirt, grease (or anti-sieze) on the sensing tip of the new unit, and just screw back in. It will turn easily for a few turns, then turn harder for about 1/2 turn, then it just stops turning. You have compressed the sealing washer correctly. Remove your wrench, plug the new sensor back in, and lower the car. Do not be surprised if the computer is a bit confused for the first 20 minutes of driving-- it will be re-learning the correct new oxygen sensor.
The function of the oxygen sensor in a Subaru or any other car is to measure the amount of oxygen that is mixed with exhaust gases.
When a Subaru has a faulty O2 sensor the fuel management is out of whack.
You cannot bypass this sensor.
The code 32 for a Subaru vehicle is for the coolant sensor or the oxygen circuit.
To replace the oxygen sensor on a Honda Odyssey, first unscrew the sensor. Then use a 22 mm socket or 7/8 inch wrench to replace the oxygen sensor.
An Oxygen sensor does not reset. You have to replace them and yes they are expensive.
The 2002 VW oxygen sensor is quite simple to replace. Remove the wiring harness. The oxygen sensor will simply pull out.
To replace the oxygen sensor disconnect the oxygen sensor electrical connector. Use an oxygen sensor socket to remove the sensor. spray the sensor with penetration oil if it is difficult to loosen. install in reverse.
how do you replace oxygen sensor of 2001 bmw 318 ci es
You bring it to a service station and tell them to replace the oxygen sensor.
Absolutely. Not just on Subaru but every car built that has an oxygen sensor. And they all do.
Probably referring to a heated oxygen sensor.