Ok so i just got my first car, im only 17 and i got a 95 civic ex, im trying to get into the honda thaang so i need to smog my car but my check engine light is going on. I put a new o2 sensor and reseted the ECU, but it still was going off. Then i ran the diagnostic test and it gave me the code 41 wich is the "heated oxygen sensor heater" but i would like to know what it exactly means, if i just replaced it with a brand new one. I need help i am new to civic's and i dont have anybody to help me so i would appreciate it is this forum would help me start my project!!

 

Sounds like the wiring to your O2 sensor is shorting. If you don't have a speedometer reading check the fuse (they run on the same fuse if my memory serves me correctly), but check anyway to make sure the O2 sensor heater fuse isn't blown..it should blow if it's shorting out somewhere.

The O2 sensor heater is on the O2 sensor itself, you can't really change them independently.

 

The speedometer works perfectly fine. But im going to go check if the o2 fuse isnt blown. Thanks

 

Usually if your 02 Sensor wiring has a bad spot and is shorting out it will pop your 15A ECU Fuse in the engine bay fusebox.

 

Sorry i havent replyed to any of you guys but there was just a 7.2 earthquake here.

 

All my fuses are working fine.

 

https://honda-tech.com/forums/hybrid-engine-swaps-18/%5Bfaq%5D-%22my-vtec-doesnt-work%22-1812135/

scroll halfway down, its troubleshooting for code 41

 

Thanks very usefull!

 

Still havent fix my problem please help!!

 

Try unpluging it make sure that all the connections are clean inside both plugs and reconnect them. If this don't work check to make sure it is getting power and check all your gounds in the engine bay.

 

Ok will do tomorrow morning!
Thanks to everyone who has replied and made a effort to help me out!!

 

i would check all the ground wires in the bay to0!

 

I checked it all of them were connected.
checked. Thanks for at least trying to help! but i still havent solved my problems, and i am learning a lot just from this problem so please keep the help coming!

 

Does anyone know how many grounds there is?
I know there is one behind each light.
There is another on the valve cover.
and another by the dizzy.
Am i missing one?

 

Still haven't solved this probelm I really need ur guys help