I recently change the oxygen sensor for my 94 honda accord because the engine light came on. The engine light came on again with code 41. That code is for HEATED OXYGEN SENSOR HEATER.
Can someone tell me where the HEATED OXYGEN SENSOR HEATER is located or what exactly I have to fix to clear the code?

Thanks

 

Was code 41 the original code before the CEL came on again. Pulling the hazard fuse or disconnecting the battery might help clear it.

BTW welcome newb.

 

I took it to shop orignally. They attached a scanner and told me the O2 sensor was bad, so I had them replace it. After the light came on again I tried to clear it by disconnecting the battery for a few hours and pulling out the backup fuse, but it did not clear the light.

 

the shop should do this for u for free since u already pay them plus they the one that did the job but u can always go to Autozone always freeeeee

 

I agree but I am afraid they will just want to charge me for another part and installation as the code specified (oxygen sensor heater). Does anyone know where this part is located in the car?

 

The O2 sensor has a built-in heater; you can't replace just the heater. But a blown fuse or busted wire can also set off that code. I suppose the shop should have checked that first, before telling you that the sensor was bad.

 

Thanks Jim
Is there any particular fuse I should check?

 

I don't have a '94 so I don't know how much is changed. If you don't have a fuse that's labeled O2 sensor heater, then maybe it just uses the ECM fuse. If that fuse were blown the engine wouldn't run at all.

That leaves wiring... The wires running to the O2 sensor are down under the car, where they can be pulled or smashed while someone works on your exhaust.

The Helm manual says exactly which wire is which, so for example you check that one wire has +12v like it should - another wire needs to be properly connected to the ECM, etc...