I found this while I was doing research for O2 replacement for my Accord.
I went to dealer to get the primary O2 sensor part number so I can buy it cheaper online. But alot of the O2 sensor that are sold online may claim to be work on your Accord. I went through 2 sensors already, they fit perfectly fine but they doesn't get rid of the error code P1167.

Below list of OEM sensors and cross ref with other 3rd party sensor.
Hope this help!

http://www.tsys07804.pwp.blueyonder.co.uk/oxygen_sensor.htm

Did you look up the error code?

P1167 41 Primary Heated Oxygen Sensor (No. 1) Heater System Malfunction.

if 2 new sensors didn't fix the problem, what makes you think a 3rd one will???

Yes I got 3rd sensor through the same dealer that sold me the other two, but this time I gave them my VIN number just to be sure. I installed it and it works right away, didn't even have to reset the ECU. I compared all three sensors and all three have different part number though they were made from same company, Denso. I also notice that the one that works, has less holes on the tip.