Hello. I have a 2001 ex, the original engine failed so I had it swapped with an engine from an 04 LX I had wrecked. It runs great but I'm ready to do what I have to do to get the p0135 out and I'm having trouble finding information. I know the ex has 2 o2 sensors and the LX has 1.i hope someone sees this and can at least point mein the right direction.

 

The donor computer should have come with the donor motor , I think I don't think you'll ever clear that code as it stands now

 

Yes the ECU was swapped. Thank you so much!

 

I don't know what that code definition is I guess it's O2 sensor related . If you've matched everything up as far as that donor motor knows then there's something else it's not recognizing I guess . You'll need a technician , a novice . like me , usually gets schooled trying to figure these things out as things may not be what they seem

 

It's a p0135. I can't imagine hiring Honda to figure out a modification issue.ibwish I could get hold of the wiring diagrams, I wonder which are different from the years