Did a d16z6 swap on my 94 dx honda civic. Swapped in p 28 ecu and wired up the vtec. I am now getting a 42 cel. I looked it up and it is heated oxygen sensor. Motor came out of a delsol. Any ideas?

 

42 doesn't sound like a real code. Double check it (see codes sticky) or post a video.

 

Sorry I mean 41 Primary oxygen sensor heater

 

If you reset the ECU, does the code return?

Did you have to rewire the o2 sensor plug for the swap?

 

It will turn back on after a few minutes of running. Plugged right up during swap.

 

Make sure the O2 sensor connector is fully seated. If so, start by testing whether the Yel/Blk wire in the unplugged connector gets battery voltage with the key in ON(II).

 

Appreciate the help. I will check and test tomorrow.

 

What ended up causing the problem you were having? I just swapped a Z6 into a VX and it has the same code coming up.

 

Did you do the VX O2 sensor fix?

 

I'll give that a try tomorrow. I hadn't seen it before. I have the original Z1 engine harness on my Z6. Will this still work?

 

IIRC it will.

 

When you handled your exhaust manifold during the swap you didn't create a hairline crack just right of the O2 bung hole did you? This is where they commonly crack and it will cause a code 41 CEL. It happened to my 93 del sol (not during a swap) and I replaced the manifold with a cheap set of headers. I've since learned it's a common problem.