nitro911

So I'm getting a code 41 currently on my car. It's swapped with a JDM B16A. I checked the sensor and it's between 10 and 40 Ohms. I then proceeded to check for voltage and I found none. I used the "My VTEC doesn't work" FAQ for all of this by the way. So now my question is where do I go from here? All it says for the next step is "repair open on the yel/blk wire that is used on the o2 harness and the pgm" I believe. So I assume that this basically means check to see why no voltage is getting to the wire but I need some help on how to go about doing this. Thanks

Former User

96 Civic? If so, check fuse 15.

nitro911

It's a 97 civic but that shouldn't matter. I'll check it tomorrow and let you know.

Former User

It matters.

In your first post, you MUST provide all pertinent information about your car and engine. Failure to do so may result in thread closure.

nitro911

Ah ok, well I assumed it would be the same for the 96-99 civics so my bad. Anyways I checked 15 and it had a 20amp fuse in it instead of a 7.5amp. So i replaced ti with a new 7.5 and it's still throwing the code.

Former User

When you turn the key from off to ON(II) (engine off), does the charging system light (battery symbol) in the cluster turn on and stay on?

nitro911

Yes that light does come on and stay on.

Former User

The primary O2 sensor heater gets voltage on the Blk/Yel wire from fuse 15. This wire is probably broken somewhere between the sensor and fuse.

nitro911

Well that's good to know. At least it's not a bigger problem. So basically should I just trace the wire back and look for the break? And if so how would I look at the wiring that's actually inside the engine harness?

nitro911

Anyone?

Former User

Run a new wire or locate and fix the break. It's up to you.