There are two sensors. one is on the exhaust manifold and the other is under the car before the catalytic converter. i assume you are getting a check engine light if you have a bad sensor. take it someplace to have it tested to see which one it is. advance auto did it for me. although both are easily accessible, they can be near impossible sometimes to remove. my upper one on the exhaust manifold was bad. i was unable to get it out. i ended up bying a stainless exhaust manifold on eBay for less or the same it would have cost me to have the old sensor removed. i also bought the sensor on eBay for cheap. do not get bosch sensor. they are notoriously bad. i would suggest that you try using a penetrating oil on the threads for a few days and then try to remove it. i even used a mapp gas torch which you can buy at Home Depot etc on it but i had no luck. the torch however made removal of the manifold very easy causing the bolts to come off while using a foot long extension on my socket wrench. good luck, rob
There is one and it is before the catalytic converter.
oxygen sensors are located just forward of your engine. In front of the engine is the catalytic converter. At the top at the bottom are your oxygen sensors.
All O2 sensors are located somewhere on the exhaust system.
2 ... one on top and one underneath the exhaust header
There should be one in the header and one more in the catalytic converter.
Unplug it and unscrew it.
The only thing you can do to them is change them.
there are five sensors on a Honda civic intake three are on the passenger side top the others are on the middle and drivers side of the bottom
1993 Honda Civic EX's dont have knock sensors.
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no
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