An O2 sensor unscrews just like a spark plug.
There should be plugs where you unplug your old o2 sensor plug at. If you havent done that then just follow the wire from the plug.
The plug is on the outside of the frame.
If you are replacing an O2 sensor with a new one, disconnect the electrical plug from the vehicle harness, cut the wires off at the old O2 sensor, slip a 7/8" box wrench over the O2 sensor and remove it by turning it counterclockwise. Install the new O2 sensor using a 7/8" open end wrench, tighten it as you would a spark plug, reconnect the electrical plug into the vehicle harness, done.
Most of the time it is just: remove the connection to the O2 sensor, screw out the old O2 sensor, screw in the NEW O2 sensor, re-make connection to the O2 sensor. Note that some O2 sensors do not have plugs and you have to cut the wire and use crimp connectors to attach the new O2 sensor. If yours has a plug, you're in luck. Note that if the package includes a tube of silicone grease, make certain that you use it to protect the connections from corrosion. One of the hardest problems is taking out the old O^2 sensor. They have been in so long that they sometimes become seized in the port. You might have to resort to penetrating oil, heating torch, or a long bar & muscle to get the sensor out. The new sensor should have a little anti-seize on the threads to prevent getting stuck in the port.
It has a conector, just un plug it. Then remove the 02 sensor from the exhaust.
Yes, there is a diagram showing the wire connection for the 1993 Camry LE O2 Sensor. A person can get this diagram by purchasing the maintenance manual to this car.
It resembles a spark plug with wires attached.
Should be the rearmost O2 sensor in bank 2. Use a wrench or O2 sensor socket to get it out. Unplug it first from the harness so it doesn't get all twisted and damage the plug on the car's harness.
If you are replacing an O2 sensor with a new one there is no need for a special wrench, unplug the electrical connection from the vehicle harness of the bad sensor. Cut the remaining wire harness off of the bad sensor so you can slip a 7/8" box end wrench over the sensor and turn it CCW to remove it. Install the new sensor with an open end 7/8" wrench and tighten it as you would a spark plug (no need to over tighten). Plug the harness back together and your done.
Bank 2 sensor 1, O2 sensor heater circuit malfunction. If the wiring and the electrical connection to the B2 S1 sensor looks okay, replace the O2 sensor. The B2 S1 O2 sensor is on the passenger side exhaust pipe directly after the exhaust manifold.
It unscrews just like a spark plug.