Where is the Oxygen sensor heater located on '96 Prelude?

Question

This is what the OBD II indicator is giving me the code for. What is it? Where is it located? My car has about 80,000 miles. I'm not sure if I should change the O2 sensors and hope it erases the code.

Answer 1

its built into the oxygen sensor

Answer 2

There are multiple O2 sensors on your cars. your O2 sensors heaters are probably built into your O2 sensor. There are a few type of O2 sensor.

1 wire sensors use the heat of your exhaust to heat up the sensor.
3 or 4 wire sensors have heatersw built into them.
5 wire sensors are wideband sensors, not very common for stock use in auto's.

Yours are probably the 3/4 wire sensor. I would buy a maintenance manual and find out where all the O2 sensors are and replace them. Start with the one in your header.

Answer 3

the o2 sensor is located just below the exhaust manifold, where the exhaust comes out the front of the engine,(just below the spark plugs)...Open the hood and look down between the exhaust pipe and the radiator. You'll see a sensor with one wire coming from it that threads into the exhaust system. Hopefully there is still a wire attached,if not, then that might be the problem. Sometimes,if you hit a bump,the clip will come off.
Hope this helps.

Answer 4

It's often part of the O2 sensor itself. Have a qualified mechanic look at it. The sensor may be bad or it may just be a loose wire.