I have a 00 4 cyl ULEV accord with no mods. It lighted the check engine light and throw codes p1166 and p1167 after i conected a scanner.
After doing some research I found out it has something to do with the primary O2 sensor, but the thing is this is indeed this sensor is different from the one on the regular 4 cyl engine.
Does anyone knows Where can buy this sensor?
Part number for it.

 

You can get em on any auto part store online, even ebay. They're like $60-$70 depending on where you get it from.

 

From what I found p1166= A/F Sensor (Sensor 1) Heater Circuit Malfunction
p1167= A/F Sensor (Sensor 1) Heater System Malfunction

Wow circuit and system

The non ulevs use ho2s so plain jane o2 sensers
The ulevs up to 2000 use o2 but look like thy have a different input colored wire 2001 and up use a/f ratio sensers and yes thy are different so make shure you use the rite one.The ulev senser input is a light green wire the non ulev is a white so thy may be different call your dealer first just to make shure.The o2 uses volts the a/f milliamp.I also put in a little article for fun. Use the little button on the bottom right of the pic to blow it up.

If the o2 will not fix the code let me know we will diag the system.90% of the time its the senser.

 

usually you have to change them around 80k. Mine are still good thankfully.

Id ebay it personally because if you go retail it might cost you.

 

Why not remove all doubt and just go to Honda for a sensor???