Sheesh...I thought I had the same problem. My engine light came on, and I did a self diagnostic check on it, and the code came up saying that I had a bad primary O2 sensor, or an exhaust leak. I changed my exhaust out yesterday, and I found a hole in my pipe, and that was what was causing it I think. My engine light hasn't been on since then.
Auto Zone wanted to charge me $300 for it, and Honda wanted $399 for it. Lots of money for a part that is only about 3 inches long with a few wires. The people at Auto Zone and Honda were very surprised at the price, but a good thing is that if your sensor only has four wires, then you can buy a universal one at Auto Zone. They do have them for $80, and they are made by Bosch. If your sensor has five wires like mine, then your screwed, cause those four wire universal sensors will not work for it of course. Be careful of what you buy, and make sure you know how many wires that your sensor has. In the books at Auto Zone, they said that the four wire universal should work for my five wire sensor, but it didn't, so be careful.
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