wideband wiring

eg6-b18c6 · Post by **eg6-b18c6** » Mon Sep 14, 2009 10:51 am

I am using the sparkks conversion harness, and the instructions tell me i should have 1 white, 2 blacks, and 1 light green wire on my primary o2.

Instead of the light green i have a blue wire, i have tried wiring it as per the instructions with the blue wire where it says i should have light green but when i start the car my a/f reading is stuck on 10.7 (or something like that, whatever it is it doesnt move at all) I'm not sure if its because its wired wrong, i think it probably is.

any ideas, is there any way i can identify the wires with a multimeter?

any other ideas? prc k pro, ukdm ep3 k20a2, not sure what the sensor is off but came with my swap and i was assured its the right one, the plug is cut off the sensor already.

thanks in advance

Post by **Spunkster** » Mon Sep 14, 2009 11:29 am

It may be the wrong sensor. Have you contacted Sparks about this?

talonxracer · Post by **talonxracer** » Thu Sep 17, 2009 9:11 am

All of the o2 sensors I have seen from Honda that have the lightblue wire instead of a green wire are the later LAF sensor, it will not work correctly.

eg6-b18c6 · Post by **eg6-b18c6** » Sun Sep 20, 2009 4:47 am

i have read somewhere that the light green wire in some cases is blue and to try swapping the blacks over, tried it but no change.

a/f reads 14.7 or maybe 14.5 when engine is of and goes to 10.7 when running.....i never get a code for the primary o2 no matter which way round the blacks are.

time to try another sensor i think....shame they're so expensive :(

i dont really see what sparkks could say about the situation as the harness has the wiring colours it states in the instructions. it's just the sensor itself. at this moment i dont think its an issue with the harness or anything sparkks can help me with.

cheers all

eg6-b18c6 · Post by **eg6-b18c6** » Mon Sep 28, 2009 8:44 am

it does work, but the blue goes where the white normally does and the white goes where the green normally does

took a while but got there in the end :D

Post by **Spunkster** » Mon Sep 28, 2009 10:53 am

It may give a reading, but the readings may be incorrect. It sounds like you have the wrong sensor.

eg6-b18c6 · Post by **eg6-b18c6** » Mon Sep 28, 2009 1:58 pm

reads the same as my friends portable unit, manages to maintain a/f in closed loop......i'm pretty sure its the right sensor......in my search to find the problem i have come across plenty of people that have an oem wideband with a blue wire.